Reservations can be made online only.
Online Booking (Kosoku Bus.com app / PC website / mobile website)

Business Hours:
Monday–Friday, 10:00–17:00 (Closed on Saturdays, Sundays, and public holidays)

Yes. Same-day reservations are available.
If seats are available, they will appear in the search results.

Please make your reservation for the day before your desired arrival date.
Example: For a bus arriving on the morning of January 2 → Search for a January 1 departure.
A bus listed as departing at around 25:00 on January 1 (actually around 1:00 a.m. on January 2) is also considered a bus arriving on the morning of January 2.

It varies by bus service, but reservations for most services open one to two months before the departure date.

No. For each reservation, only one boarding location and one drop-off location can be selected.

Yes. The limit varies depending on the bus service. The maximum number of passengers you can book at one time is shown below the fare categories on the service details page.

If you are booking for multiple passengers and receive an error even though seats are available, you may have exceeded the maximum number of passengers allowed per reservation. Please split your group into multiple reservations.

Yes. In the [Passenger Information] section, select “I will not be traveling” to enter the details of the person who will actually be traveling.
This option is not available for guest bookings.
If booking as a guest, please make the reservation using the passenger’s information.

No consent form is required, and minors may travel without an adult.
If traveling on an overnight bus, please take appropriate precautions for your safety.

Some bus services have restrictions on the boarding and drop-off locations you can select.
For services marked [Boarding and Drop-off Restrictions Apply], certain boarding or drop-off locations may not be available depending on your travel date.

If you select an unavailable boarding or drop-off location, you will receive an error and your reservation will not be completed. Please select a different boarding or drop-off location or choose another bus service.

There are several possible reasons why you may be unable to make a reservation:

・No seats are available.
・On a bus with four seats per row, the only remaining seat may be next to a passenger of a different gender.
・The booking deadline has passed.
→ If the same bus service no longer appears in the search results when you search again, there are no seats available for booking or the booking deadline has passed. Please select another bus service.

・The system may be undergoing scheduled maintenance:
　JR Bus: 1:00–5:00 a.m.
　Services with a service code beginning with “Z”: 2:00–5:00 a.m.

・An error may have occurred during the booking or payment process:
　・3D Secure authentication was not completed successfully.
　・Your PayPay balance was insufficient.
　・The payment screen was closed or you navigated to another page before the payment was completed.

Before making another reservation, please be sure to check your reservation history on My Page.
Please confirm that your reservation was not completed before making a new reservation.

■ My Page Login
https://www.kosokubus.com/_en/?page=login

We do not offer a waiting list. If a seat becomes available, it will appear in the search results.

We recommend allowing at least two hours between buses.
As buses may be delayed, please make sure to allow plenty of time when booking your connecting bus. We recommend leaving at least two hours between connections.

No, we do not offer round-trip discounts. Please book each journey separately as a one-way trip.

It depends on the bus you book.
Some buses may not allow infants on board. Please check the [Information from the Bus Operator] section.

*There is no fare for infants who do not require a seat. However, passengers without a seat are still included in the total number of passengers on board.
If the bus reaches its maximum passenger capacity, you may be refused boarding. We recommend reserving a seat at the child fare.

Child fares apply to passengers aged 12 and under.

Bus services marked with the [Child Fare Available] icon offer child fares for passengers aged 12 and under.
For services that offer adult fares only, passengers aged 12 and under must also book at the adult fare.

No. The fare remains the same even if you book multiple bus services. No discount is available.

For services with the “Seat Selection” icon, you can select your preferred seat. For services with the “Seat Preference” icon, passengers booking for one person may request a window or aisle seat (not available for bookings of two or more passengers).
If neither icon is displayed, your seat will either be assigned automatically or you will be given a pre-assigned seat when boarding.

It depends on the bus. In most cases, passengers included in the same reservation will be seated near each other. If no seat number is shown on your reservation confirmation, your seat will be assigned when you board.

It depends on the bus you book.
If a seat number is shown on your reservation confirmation, your seat will be assigned immediately after booking.
If no seat number is shown, you will be informed of your assigned seat when you board. In this case, seats are assigned by the bus operator after the booking deadline. You cannot select your seat either when making your reservation or when boarding.

On buses with four seats per row that do not have the “Women-friendly seats” icon, you may be seated next to someone of a different gender.

Women-only bus: The entire bus is reserved exclusively for female passengers.
Women-only seats: Only designated seating areas are reserved for female passengers. Male passengers may be seated in other areas of the same bus.
Women-friendly seats: If you book for one person or an odd number of passengers, the seat next to you will always be assigned to a female passenger.

3 independent seats: All three seats in each row are completely separate, with aisles between them, so no seats are directly next to each other.
(3 individual seats per row)
https://www.kosokubus.com/?dir=sp&page=_3seatonly

3 seats: Two seats are placed side by side, with one separate seat across the aisle (similar to a 4-seat configuration with one seat removed).
(2 seats together + 1 separate seat per row)
https://www.kosokubus.com/?dir=sp&page=_3seat

For services marked “Double Seat” or “Empty Adjacent Seat,” one passenger will be provided with two adjacent seats.

No. The payment method cannot be changed after booking. Please cancel your reservation and make a new one. Please note that a cancellation fee may apply, depending on the status of your reservation.

You can pay by credit card, debit card, or PayPay.

No payment processing fees are charged on our website.

You can delete your saved credit card information by going to [Saved Credit Card Information] on My Page.

To save a new card, enter the new card details when making a reservation and select [Save this card]. For future bookings, you will only need to enter the security code.

We accept Visa, JCB, Mastercard, American Express, and DC Card.
When making a payment, you will need to enter your card number, expiration date, and security code.

The method for obtaining your authentication code or one-time password varies depending on your card issuer. It may be sent to you in one of the following ways:
・By SMS
・By email
・Through your card issuer’s app

If you have not received your authentication code or one-time password, or are unsure how to obtain it, please check your card issuer’s official website.

3D Secure is an identity authentication service for online card payments. It is provided by international card networks to help prevent unauthorized use of credit cards.

Your card issuer assesses the risk of unauthorized use based on information such as the device you are using and your previous transaction history. If additional verification is required, you may be asked to confirm your identity using a one-time password, SMS authentication, or another verification method.

You can add funds through the PayPay app. On the [Payment Details] page, select [PayPay Balance]. On the [Select Payment Method] screen, tap the “+” icon next to [PayPay Balance]. You will be taken to the top-up screen, where you can enter the amount you wish to add.

After adding funds, tap [Pay] to complete your payment.
*The steps may vary depending on your PayPay settings.

If you add funds during the reservation process, an error will occur and your reservation will not be completed. Please start again by searching for available seats.

On a smartphone, you will be redirected to the PayPay app. Tap “Pay” within 5 minutes.
On a PC, scan the QR code or log in to the PayPay website using your mobile phone number and password to complete the payment.
If payment is not completed within 5 minutes, your reservation will not be confirmed.

The facilities and services available on each bus are indicated by icons on the search results page. Please note that they may change if the bus is replaced at short notice.

It depends on the bus service you book. Restroom availability is indicated by an icon on the service details page. Please note that onboard facilities may change if the bus is replaced.

Please check the icons on the search results page. If there is no blanket at your seat, please ask a member of the bus staff.
Please note that some bus operators may have suspended blanket service as an infection prevention measure.

If you are unable to use the charging outlets or Wi-Fi while on board, please ask a member of the bus staff for assistance.
Please note that these facilities are complimentary services and are not included in the fare.

Please check your [Reservation Confirmation] email and My Page.
Once your reservation is complete, a [Reservation Confirmation] email will automatically be sent to your registered email address.
Please make sure to check your reservation details.
*The [Reservation Confirmation] email contains important information you will need on the day of boarding, so please be sure to check it.

You can check your reservation details on My Page.

<For registered users> Log in with your registered ID and password. <For guest bookings> Select [Book as a Guest] and log in using your reservation number and phone number.

■ My Page Login
https://www.kosokubus.com/_en/?page=login

Please check the following:

1. If you cannot log in with your ID and password, one of the following may be the cause:

・Your login ID (email address) may have been entered using full-width characters.
→ Please enter it correctly, or try copying and pasting it.

・There may be spaces before, after, or within your ID or password.
→ These spaces may not be visible, so please place the cursor in each field and check carefully.

・Your ID or password may be incorrect.
→ Please use the ID/Password Reminder page below to check your login details.
■ ID/Password Reminder
https://www.kosokubus.com/_en/?page=reminder

・Your browser cache may be preventing you from logging in.
→ Clear your browser cache and try again, or try using a different browser.

・You may have made your reservation as a guest.
→ Please log in to the Guest My Page using your reservation number and phone number.

2.0If you do not know your ID or password:
Please use the ID/Password Reminder.

[If you do not know the answer to your security question]
Please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

Please check the following:

1. Please check that your email address is correct.
Check the email address registered on My Page.
If it is incorrect, select [Change Reservation Information] and enter the correct email address.
After updating your email address, select [Resend].

2. Please check your spam filter settings.
Please adjust your spam filter settings or add info@kosokubus.com to your list of approved senders.
After changing your settings, select [Resend].
■ My Page Login
https://www.kosokubus.com/_en/?page=login

3. Please check your spam or junk folder.
Your [Reservation Confirmation] email may have been automatically filtered into your spam, junk, or another folder. Please check folders other than your inbox as well.

4. Please check your email storage capacity.
If your mailbox is full or has insufficient storage space, you may not be able to receive new emails.

Please print it out and bring it with you.
If you are unable to display your [Reservation Confirmation] on your smartphone or other mobile device, please bring a printed copy.

For services marked [Mobile Boarding Pass] or [QR Code] in the service name, please be sure to print the attached PDF file and bring it with you.

If you can display it properly on your smartphone or other mobile device, you can board by showing it on your screen.

By selecting [Book as a Guest], you can make a bus reservation without creating an account.
You can view your reservation by entering your reservation number and phone number.

■ Guest Booking Login
https://www.kosokubus.com/_en/?page=guest_login

You can view, change, or cancel your reservation by selecting [Guest Login] on the login page.
Log in using your reservation number and phone number.

■ Guest Booking Login
https://www.kosokubus.com/_en/?page=guest_login

On the reservation details page, select [Resend Reservation Confirmation Email] to resend the [Reservation Confirmation] email to your registered email address.

If you would like to change your registered email address, select [Change Reservation Information] to update your email address before resending the confirmation email.

■ Guest Booking Login
https://www.kosokubus.com/_en/?page=guest_login

You can change the registered passenger information, boarding location, drop-off location, and number of passengers (reductions only). Changes can be made until 5:00 p.m. two days before departure.

After entering your changes, select [Review Changes] to proceed to the confirmation page. Review the changes, then select [Confirm Changes]. An updated [Reservation Confirmation] email will be sent to your registered email address.

For some bus services, the boarding location, drop-off location, or number of passengers (reductions only) cannot be changed online. Please contact us by email during business hours.

*Boarding and drop-off locations cannot be changed for some services, including:
・Services booked with discounts such as [Early Bird Discount] or [WEB Discount]
・Services with a service code beginning with “JR” or “X”
・Changes to the boarding or drop-off location that result in a fare difference

■ Guest Booking Login
https://www.kosokubus.com/?page=guest_login

You can cancel your guest booking directly from the Guest Booking Login page before the cancellation deadline.
The cancellation deadline varies depending on the bus service, so please check your [Reservation Confirmation] email.

Once the cancellation deadline has passed, the [Cancel] button will no longer be displayed.
In this case, please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

■ Guest Booking Login
https://www.kosokubus.com/_en/?page=guest_login

Your browser cache may be preventing you from logging in.
Please clear your browser cache and try again, or try logging in using private/incognito mode or a different browser.

Guest bookings do not require an ID or password.
On the login page, select [Book as a Guest] and log in using your reservation number and phone number.

■ Guest Booking Login
https://www.kosokubus.com/_en/?page=login

If you do not know your reservation number or phone number, please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

No. Bus services and travel dates cannot be changed.
If you wish to change your departure time or travel date, please cancel your existing reservation and make a new one.
Please note that a cancellation fee may apply when canceling your original reservation.

You can reduce the number of passengers, but you cannot add passengers to an existing reservation.

To reduce the number of passengers, go to My Page → [View / Change / Cancel Reservation].

Until 5:00 p.m. two days before departure:
You can make changes through My Page.
■ My Page Login
https://www.kosokubus.com/_en/?page=login
*Please note that some bus services cannot be changed online.

After 5:00 p.m. two days before departure:
Please contact us by phone or chatbot during business hours.

If you cannot make changes through My Page:
・The bus operator does not allow changes after booking.

To add passengers:
Passengers cannot be added to an existing reservation. Please make a separate new reservation for any additional passengers.

You can change your boarding or drop-off location through My Page if there is no change in fare.
Go to My Page → [View / Change / Cancel Reservation] to make the change.
*Please note that some bus services do not allow changes to boarding or drop-off locations after booking.

■ Until 5:00 p.m. two days before departure
You can make changes online through My Page.
*If you are unable to make the change through My Page, please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.
■ My Page Login
https://www.kosokubus.com/_en/?page=login

■ After 5:00 p.m. two days before departure
Please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

■ You may not be able to make changes through My Page in the following cases:
・Your reservation was made with a discounted fare, such as [Early Bird].
・Changing your boarding or drop-off location would result in a fare difference.
・The bus operator does not allow changes after booking.

The gender on a reservation cannot be changed. If you need to change it, please cancel your existing reservation and make a new one. Please note that the applicable cancellation fee will be charged when canceling your original reservation.

It depends on the bus service.

For services marked [Mobile Boarding Pass Required] or [QR Code Required]:
The passenger information entered at the time of booking cannot be changed.
If you need to make a change, please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

For services not marked [Mobile Boarding Pass Required] or [QR Code Required]:
The passenger’s gender cannot be changed.

Until 5:00 p.m. two days before departure:
You can make changes online through My Page.
■ My Page Login
https://www.kosokubus.com/_en/?page=login

After 5:00 p.m. two days before departure:
Please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

Your refund will be processed through the credit card used for payment. The original payment will be refunded in full, and a new charge will be made for the adjusted amount, resulting in a refund of the difference.
Depending on your credit card company’s billing cycle, the refund may not appear until the following month or later.

This may be a temporary duplicate charge due to the way debit card transactions are processed.

If the payment amount changes due to a cancellation or other adjustment, a new payment may be processed before the original transaction has been fully reversed by the payment processor. This may result in a temporary duplicate charge.

It may take up to approximately six weeks for the original amount to be refunded. The timing of the refund varies by card issuer, so please contact your card issuer for further details.

You can cancel your reservation through My Page.
Please check the cancellation deadline shown next to the [Cancel] button on My Page.

■ My Page Login
https://www.kosokubus.com/_en/?page=login

After the cancellation deadline, please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

Cancellation fees vary depending on the bus service you booked. Please check the cancellation policy in your [Reservation Confirmation] email.
No cancellation fee will be charged if the bus service is canceled due to severe weather, natural disasters, or other circumstances beyond the bus operator’s control.

The refundable amount will be returned to your PayPay account immediately after you cancel your reservation or change the number of passengers. Please check your [Transaction History] in PayPay.

Bus services may be suspended at short notice if safe operation cannot be ensured.
Each bus operator will determine whether its services can operate.
Depending on road conditions, buses may be rerouted, which may result in significant delays.
If a service is suspended, the bus operator will notify you.
For the latest service information, please check the official website of the bus operator.

You will receive a full refund.
Reservations for canceled bus services will be refunded in full with no cancellation fee.
Kosoku Bus.com will process the cancellation and refund for canceled services.
*Please do not cancel the reservation yourself through My Page, as the standard cancellation fee and refund processing fee may apply. Please wait for an email regarding your refund.
If you have not received an email regarding your refund within one week, please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

If the bus is scheduled to operate, a cancellation fee will apply.
If you cancel a bus that is scheduled to operate, you will be charged the applicable cancellation fee. Even if the service is later canceled, the cancellation fee will not be refunded.

No, we are unable to provide a refund.
Even if you are unable to board due to a delay on public transportation, the bus will operate as scheduled and no refund will be provided.

No refunds or compensation are provided for delays.
Buses may be delayed in arriving at boarding or drop-off locations due to traffic congestion, road closures, weather conditions such as typhoons or heavy snow, vehicle breakdowns, or other unavoidable circumstances.
We do not provide refunds for bus delays or compensation for any resulting losses.
We are also unable to compensate for missed connections, accommodation costs, or any other losses resulting from delays.

Only the bus fare will be refunded.
If the bus service is canceled or suspended during the journey, only the bus fare will be refunded. Accommodation costs and alternative transportation expenses will not be covered.

Please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com during business hours.

If one service in your round-trip booking is canceled and you decide not to travel on either service, you will receive a full refund.

*Please note that if one service is canceled, the other service will not be canceled automatically.
You must contact the Kosoku Bus.com Center before the departure time of the service that is still operating.
Refunds cannot be issued after the departure time has passed.

Please check the official website of the bus operator for the latest service status.
*The name of the bus operator is listed in your [Reservation Confirmation] email.

In some cases, a service may be canceled immediately before departure due to unavoidable circumstances. In such cases, you may not be notified until after you arrive at the boarding location, or you may be informed by staff at the boarding location.
Thank you for your understanding.

The decision may be made shortly before departure.
In the event of severe weather, a service may be canceled at short notice. Please check the bus operator’s official website for the latest information.

It depends on the bus service and your payment method.

● If your reservation states [Mobile Boarding Pass Required] or [QR Code Required]
Please present your Mobile Boarding Pass or QR code.
・For credit card or PayPay payments → It will be attached to your [Reservation Confirmation] email.

You can also access your Mobile Boarding Pass from My Page (for both registered users and guest bookings).
Please display the Mobile Boarding Pass (PDF file) on your smartphone or other mobile device, or print it out and present it to the driver.
The PDF file may appear with a paperclip (attachment) icon or PDF icon and may be attached at the top or bottom of the email. In some cases, it may appear within the email itself.
Depending on your device, you may need an app or software to open the PDF file.
Please make sure that you can open the PDF file before boarding.

● If your reservation does not state [Mobile Boarding Pass Required] or [QR Code Required]
Please present the following:
・For credit card or PayPay payments → Please present your [Reservation Confirmation] email.

Buses depart on time. Please arrive at the boarding location 10–15 minutes before the scheduled departure time.
Buses cannot wait for late passengers, even if you contact us in advance.
Please note that we will not call you if you do not arrive at the boarding location by the departure time.

You can check the boarding location in your [Reservation Confirmation] email or on My Page.
A map of the boarding location is available in your [Reservation Confirmation] email or on the reservation details page in My Page.

■ My Page Login
https://www.kosokubus.com/_en/?page=guest_login

No. Your name will not be called, and you will not be contacted by phone if you do not arrive. Please approach the driver or staff member yourself and confirm your reservation before boarding.

Buses depart on time and cannot wait for late passengers, even if you contact us in advance.
Once the scheduled departure time has passed, the reservation cannot be canceled. As your seat was reserved for you, no refund will be provided.

Baggage policies vary by bus operator.
Please check the [Baggage Policy] section on the bus details page when making your reservation.
Please note that some buses do not have a luggage compartment.

≪Standard Baggage Allowance≫
Up to one item per passenger that meets the following requirements:
・Total dimensions (length + width + height): 1 m or less
・Weight: 10 kg or less
・Volume: 0.027 m³ or less

If you are traveling with large luggage, please contact us in advance.
*Musical instruments, pets, bicycles, surfboards, skis, snowboards, and similar items are generally not accepted.

≪Buses with a Luggage Compartment≫
The maximum baggage size that can be stored in the luggage compartment is specified in the [Baggage Policy] section on the bus details page.
If your baggage exceeds the specified size, please consider another method of transportation, such as shipping it in advance.
Baggage exceeding the size limit may be refused at the time of boarding.

≪Buses without a Luggage Compartment≫
If you have large luggage other than carry-on baggage, please consider another method of transportation, such as shipping it in advance.
Carry-on baggage must be small enough to keep on your lap or place in the overhead rack.
Baggage may not be placed at your feet or in the aisle, as it may obstruct reclining seats or passenger movement.

No compensation is provided.
Bus operators are not responsible for damage to or theft of luggage stored in the luggage compartment or brought on board.

We apologize, but pets are not permitted either on board or in the luggage compartment.
Thank you for your understanding and consideration for the comfort of other passengers.

Please contact the Kosoku Bus.com Center by email at info-inbound@kosokubus.com and include the following information:

-------------------------------------
◆ Required Information
・Reservation number:
・Lost item:
・Color, shape, and any other identifying details:
-------------------------------------

Light snacks and drinks are permitted. Please avoid foods or drinks with strong odors, alcoholic beverages, noisy foods, and anything that may easily spill.
On overnight buses, eating is not permitted after the lights are turned off.
Please be considerate of other passengers when bringing food and drinks on board.

Please refrain from making or receiving phone calls while on board. We recommend setting your phone to silent mode or turning it off.
On overnight buses, most passengers will be sleeping after the lights are turned off. Please be considerate of other passengers and keep screen brightness and light to a minimum.

Smoking is not permitted on the bus, including e-cigarettes. If you wish to smoke, please do so during rest stops at service areas or other designated stops.

Most bus operators provide restroom breaks. Regardless of whether the bus has an onboard restroom, highway buses generally stop for a break every two to three hours.

After departure, the driver will announce the service areas where breaks are scheduled. Please note that scheduled rest stops may change depending on traffic and operating conditions.

On some buses with onboard restrooms, the bus may stop at a service area only for a driver change, without a passenger break.

If you need to use the restroom at a service area during such a stop, please check the departure time and let the driver know before leaving the bus. The bus will depart at the time announced by the driver, so please be sure to return on time.

No. You cannot board or get off the bus at a service area. You may only board and get off at designated stops. We apologize, but boarding or getting off at any other location is not permitted.

Lighting and rest stop announcements vary by bus operator.
On overnight buses, the cabin lights are usually turned off some time after departure.

Announcements and lighting during rest stops also vary by bus operator. Some operators provide both announcements and lighting, while others make announcements only at departure and use only low-level lighting around the foot area during rest stops.

Scheduled rest stops are provided as a guide and may change depending on traffic and operating conditions.

Receipts issued through our website comply with Japan’s Qualified Invoice System.
The tax treatment for each item is as follows:

・Bus fare: Taxable
・Insurance premium: Tax-exempt
・Cancellation fee: Non-taxable
・Refund processing fee: Taxable
　*This fee does not apply to refunds due to canceled bus services.

Only the applicable items will be listed in the description on the receipt, as shown in the following example:
Example: “Highway bus fare, insurance premium, highway bus cancellation fee, and refund processing fee”

Qualified Invoice Issuer Registration Number: T5012401021932

You can issue a receipt through My Page after payment has been completed.
Receipts for cancellation fees can also be issued.

You can change the name on the receipt to your preferred name.
The receipt description cannot be specified.
■ My Page Login
https://www.kosokubus.com/_en/?page=login

If you would like to specify the receipt description or request separate receipts for each passenger, please email the Kosoku Bus.com Center with the following information:
・Reservation number
・Name(s) to appear on the receipt(s)
・Receipt description
・Number of receipts required

You can issue a receipt from the reservation details page.

<For registered users>
On the login page, select [Log in with your Kosoku Bus.com ID].
Log in with your registered ID (email address) and password.
Select [My Page].
Select [View / Change / Cancel Reservation].
Under [All Booking History], select the reservation for which you would like to issue a receipt.
Under [Total Amount], select [Issue Receipt].

<For guest bookings>
On the login page, select [Book as a Guest].
Enter your reservation number and phone number, then select [View Reservation].
Under [Total Amount], select [Issue Receipt].

■ My Page Login
https://www.kosokubus.com/_en/?page=guest_login

You can make a reservation without creating an account.
Select [Book as a Guest] to continue without registering.
For guest bookings, you can log in to My Page using your reservation number and phone number.
If you create an account, you can make future reservations more easily by simply logging in.

You can update your account information through My Page.
Go to [View / Edit Account Information] to update your name, date of birth, phone number, email address, password, or security question.

You can close your account through My Page. Go to [Close Account] on My Page and follow the instructions.

Please use the ID/Password Reminder.
■ ID/Password Reminder
https://www.kosokubus.com/_en/?page=reminder

If you contact us for assistance, you will need to provide your registered email address, date of birth, security question, and answer.