Ai is shown taking bath although nothing explicit is shown.

In Episode 2 the teacher/monster's breasts are clearly visible but does not look like skin

A girl takes off her school shirt in front of an abuser, nothing explicit.

A girl makes another girl touch her breasts (Mild).

A girl gets raped.

A rape scene is shown. The child victim is shown struggling as the adult holds them down. No nudity or sex, but what is shown in disturbing and the discussion of what happens is disgusting.

Story is mainly told from the perspective of young teenage girls including heterosexual and homosexual inferences and interactions.

A girl is pushed forcefully into a wall

One of the main characters gets a wound on her stomach, blood is seen

There is plenty of blood and injury seen

An axe is thrown on someone's arm. Blood splatter is seen. Moderate.

Some uses of damn and hell

Some uses of the word 'bitch'.

They use 'bast*rd' once or twice

a character's mother smokes and drinks alcohol

Psychopathic and Creepy vibes are given off in the show, however the mood sometimes jumps to lighthearted and back.

A girl gets the word "Die" written repeatedly on her locker

One of the main characters gets bullied frequently

This anime is full of very disturbing themes including rape, self harm, pedophilia, abuse, sexual harassment and other topics discussed by young 12-13 year olds (which can be very upsetting for some viewers). Although very little is shown, it's clearly hinted at and talked about in conversations between the characters.

self harm is shown and mentioned several times throughout the series

It's heavily implied that Rika self-harms throughout the season