If you are attempting to play Euphoria (often requiring a fan translation patch or the English version available on platforms like MangaGamer), you will quickly realize that this is not a standard dating sim. It is a designed to mislead you.
: The game features a strictly locked structure. A good guide should clearly state that you must complete specific character routes (Natsuki, Rika, Rinne, and Nemu) before the True Ending (Kanae Route) becomes accessible.
The story follows Keisuke Takato, who wakes up trapped in a white underground facility with his classmates and his teacher. A masked figure named "The Guide" forces them to participate in a "game": Keisuke must choose a "key" (a female captive) and subject her to a specific "door" (torture) to earn "keys" to escape.
Completing the "Good End" for each character is necessary to unlock subsequent paths, eventually leading to the True Ending.
