The main female character spends the majority of time in a state of undress, ranging from lingerie to a school swimsuit. The camera often focuses on her breasts and buttocks.

Female characters are occasionally seen nude, without nipple or genital detail.

There are a few instances of sexual threat, such as a character pulling off another character's panties as she sleeps, a female being groped over her bra by a monster, and a male ripping a female's shirt off exposing her bra.

There is some sexual innuendo relating to the process in which some characters go 'inside' another.

Regular scenes of violence include characters being punched, kicked, shot, etc. Some moderate bloody detail, usually limited to quick gushes or pools of blood.

Frequent mild to strong language ('f*ck', 'sh*t', 'damn', 'hell', 'ass' 'bastard', 'bitch', 'slut') in the official English subtitles.

There are some references to suicide in the main storyline, including multiple interrupted attempts and aftermaths briefly shown from a limited view of a character hanging.