Some mild innuendo. Sensei is seen repeatedly trying to look up a figurine's skirt.

A brief hot springs scene shows the top of a girl's breasts (no explicit detail).

Frequent mild combat violence, with no blood or serious injury detail.

One flashback scene shows red blood stains in a black-and-white scene (not gory).

Occasional mild coarse language ('damn', 'hell', 'ass', 'crap') in the official English subtitles. One cut-off, implied use of strong language ('fu-').

A special power called 'Cat Doping' is used, which has a hangover effect for its users the next day.