恶魔鉴定守则

You, with no memory, are thrown into a strange space to participate in a game.
The three women, trapped here with you, will be your companions on this journey.
All three claim to know you and insist they share some kind of special relationship with you.
However, even if their stories seem to be by one's own account, the worlds they've resided in clearly have no connection to one another.
You’re confided with a letter, that there is a demon hiding amongst them…
But will you really able to find them?

[Translated from Steam]