This is visual novel in which players assume the role of a high-school student investigating a series of mysterious deaths in Tokyo. Some scenes depict still images of characters engaged in violent acts: characters threatening people with knives, strangling other characters, and involved in torture devices (e.g., a corpse strangled by ropes until its neck snaps). Crime scenes are graphically depicted with extensive blood-splatter and large amounts of text detail. Corpses are frequently depicted with bloodstains and sometimes mangled fingers, dangling entrails, or exposed brains. The game also contains sexual material, in still images and text: two female characters moaning off screen while discussing each other's breasts (e.g., “Hmm…you've got big breasts, don't you Hana?”); a dream sequence in which a character grabs another's crotch (e.g., “Was I really dreaming about someone rubbing my crotch?”); prolonged innuendo about an ice cream cone (e.g., “I saw her tongue flick seductively for a moment before her tiny mouth swallowed the whole thing.”); references to sexual fetishes and masturbation. Still images also depict partially exposed breasts and buttocks. The words “f**k,” “sh*t,” and “a*shole” appear in dialogue.

The content of this game is suitable for persons aged 16 years and over only. It contains: Nudity of a sexual nature - Strong language - Sexual images and/or sexual innuendo - Mild bad language - Images or sounds likely to be horrifying