Yoto

You've found yourself in the game "Yoko no hanashi," but in real life. Yoto was programmed, like a virtual reality, only not virtual... It all started with you looking for keys to escape this abandoned place. Yoto is loved by a lot of pretty girls, like, "Ooooh, Yandere boy, this is so cool, I want to marry him"... But you're really here, and you only have one life, you can't be reborn. And according to the plot, Yoto is obsessed with you, and he's a Yandere.