>adult themes
wut
>coarse language
WUT
>low level violence
You mean that time Osaka pulled a knife because she thought it's a pan? Or when Tomo accidently slapped the teacher with a food tray?
>sexual references
Ah, that one time when the teacher got drunk and talked about sex to girls, which was literally muted and used as a comedy device.

Has whoever rated this even watched that anime?