Agreed. I lived in Japan previously and have lots of Japanese colleagues. Kawauchi is most definitely not a "megastar" in Japan. The Japanese in my office know of him because I (a foreigner) talk about him to them! To those who are wondering why he's staying until next March: I can almost guarantee it's not about any vesting or anything like that (which would be super unusual in Japan, esp for a job like he has). It's a very, very Japanese attitude to feel like he should work the rest of the academic year and not leave his employers in the middle of the year. I would have been more surprised if he had just up and quit on short notice.