So it looks like Hajime Kanasugi has completely stopped doing music. His last credit is for this game (
https://vgmdb.net/album/16813 ) as "music producer" while with the company DIVA.
His Twitter profile says that he's now a "Business Designer". He's even written some books, including one called "Money, the State, and Our Future".
https://twitter.com/kanasugihajime