Ass ending. Huge plot holes. Shameless retcons (e.g. The Shirasagi / Shishidou tension clearly went farther back than the Headmaster and he clearly was not under Abidani’s spell as he was doing shady stuff even before). No actual deaths. Our “hero” lies to his friends and cheats Gokijima right to the end.
This will be lucky if I give it a 6/10 and that will mostly be for the fan service, Abidani (best character), Shyu Oumei (second best), Kaiser Mushrom (third best), and the early chapters (had promise until the author fucked it up).