Natsuki's route establishes the foundational rules of the game's twisted "experiment" and offers the gentlest introduction to the underlying mystery. Select for the first experiment. "Obey the rules." "Continue the experiment with Natsuki." "Focus entirely on Natsuki." "Try to find an escape route with Natsuki." Result : Unlocks Natsuki's Ending. 2. Rin Nemoto Route
A critical choice emerges regarding a keycard. Investigate the room thoroughly to secure it.
Select choices that reject the validity of the virtual environment. Look for options involving Kanae (the teacher) that were previously blocked or resulted in immediate deaths.
: These are relatively standalone routes that introduce the game's mechanics and some early lore.
: If using a version with a built-in flowchart, keep an eye on "Side Endings" (like the Brute or Gas ends) as they are often required for 100% CG completion.