It was professional, simple, and what I expected. I took the time to research what sorts of questions I might be asked and prepared for them accordingly. They also asked about things from my SOP which might be consider a little difficult to think of quickly but if you wrote your SOP with passion and knew what you were trying to say, it is not difficult.

Interview with a JET regional leader, former JET, and Japanese ambassador. Asked questions about teaching experience, why JET, and in the middle there was a short intermission to test Japanese language skills.

Very quick 20-30 minutes interview with a panel of 3 interviewers. Generally one senior consulate staff, one junior consulate staff and one ex-JET participant. They'll take turns asking you questions, most of which you can find online but expect 1 or 2 more difficult ones that might test how you'd respond under pressure. Ends with a short section testing your knowledge of Japanese, but don't worry these are just bonus marks and Japanese language skills are not necessary