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