Tsuki

Tsuki Mizkef is a guide during the game, although rarely seen. The appearances mostly take place when the Player plays as Yukina. More about Tsuki can be found in secret areas of the game. While most of the game is yet to be written, it is predicted that doing something in the game files will unlock a new ending, playable character, or pathway.

Trivia
Tsuki's first appearance was in A Literal Octopus's Improvised Roleplay.

From experiencing the game thousands of times, Tsuki suffers from depression.