I'm flying NRT-ICN-NRT this September as part of AA award. I'm planning for C, and JAL award booking webpage says one of the flight will be 747 with shell sleeper seat. I think there are only two 747 seatmaps - L02 and L04 - that have sleeper C seat. (correct me if I'm wrong.) Both have solo-F seats, but it seems JAL does not sell F class on NRT-ICN flight at all.

Anyone knows who get F seats? Or is there something I'm missing?

Please don't say that "this is only 2-and-a-half-hour flight. anyseat will be okay." This is the first premium class trip of mine Gonna take all advantages I can. My flight will be 9/12 JL959 and 9/18 JL954. Thanks.