where am I and who the fuck are you all

where am I how did I get here? *thunder erupted out side* fire is everywhere and insane laughing is hread...but when y/n wakes up he's not in his house or time line he's in a different universe can the girls of this place saw him? or will be fall to the darkness in his heart ?? WARING THERE WILL BE HEAVILY INVOLVED LEMONS...you all have been warned