I frequently travel LAX to NRT, leaving late morning and arriving in NRT 5:30 ish. I awake at a normal time (7 AM or so) in LA and then stay awake through the entire flight for the most part, maybe a short nap after dinner, but just spend my time reading and watching movies.

Upon arriving in Tokyo, get to hotel, have some dinner, and stay up until a normal bedtime locally. This makes for a very long day, but by that point I am so tired that I have a good nights sleep and my body clock is reset for the rest of the trip.