Agony/reference

Trivia

 * A silver dog tag can be seen hanging on the painting referencing Katsuki and Shun's shirts pattern. In the original fangame, the dog tag is an additional effect that allows the player to reach the good ending for each character.
 * The paintings depicting the moonLess* protagonists' shirts have 2 ribbons tied to them. It references their eyes colors: Oborogi has a red eye and a yellow eye, while Michitsuki's eyes are red.
 * The third room itself (along with BGM) is a reference to Re:in.
 * The fourth room itself is a reference to Void.
 * The apartment room itself is a reference to Annabelle