The following information can be modified online.
Please log in to "Manage Booking" in order to modify your passport information.
「Manage Booking」（Log in Page）
You cannot book an international ticket if your passport is not ready.
Please purchase your ticket after you received your passport.
Please check the followings about modifying other information.
「Is it possible to change the passenger's name?」
「Can I modify the passenger information after booking?」