You can cancel your reservation from My Page. A cancellation fee will be charged if you cancel.
Please be sure to check this when cancelling your reservation. If you have made round-trip reservation, you can cancel just one way.
Click the "Detailed confirmation" button to display the reservation details screen.
Click the "Reservation cancellation" button.
After confirming the reservation details and cancellation fee to be canceled, click the "Confirm Cancellation" button.