You can check cancellation fees here.
If you late on the day more than a hour without any notice, your booking will be canceled.

【cancellation fees】

7 days before pick-up day For free
6~3 days before 20% of basic charge
2 days ~ the day before 30% of basic charge
the day 50% of basic charge

※ You will be charged with the remittance of the refund amount by cancellation of reservation.
※To cancel a reservation, please contact the reservation center.