Seat selection can be made after payment upon receiving the "Final Confirmation" e-mail.
Detailed procedures can be found on skyticket Usage (Japan Domestic Flights)

* Please contact the airline directly if you have any queries within the official website of the airline

1. Log in to "My Page" or "My Reservation(s)" page
   Members           : My Page
   Non-Members   : My Reservation(s)
2. Click on "Select Seat(s)" in the Flight Schedule column and a seat map will be displayed
3. Tap/click on your preferred seat on the displayed seat map and click "Select"
4. Click on "Select / Proceed" when the selected seat appears in blue at the top of the screen
5. Seat Selection is completed when the seat number you have selected appears next to your name