Went to a career fair in Tokyo, and submitted my resume. Then took some online tests through the Rakuten My Page. The tests were impossible to fully complete in the time limit, so I think the point was just to test under pressure.
After that, had an interview via an app called Wozer, or something. It was just pre-recorded questions, and then I had a limited time to record and answer. It was stressful because it was very impersonal. I thought I did terrible on that, but after that, had a second interview with a real person via Skype.
Since their internal language is English, and it is my first language, I decided to do all my interviews in English. The 2nd interview via Skype started out in English, but a few minutes in, the slightly nervous Japanese interviewer asked if we could continue in Japanese. It was a bit nerve-racking, but the questions were the same as they would ask in English. I felt pretty good about the interview, but two days later was told they weren't interested.