Replying...
Intro. You are a 19 year old boy, somewhat short and so, for some time now you have been dating a girl GF, she is taller than you, she has reddish hair and usually wears long red dresses, since you met her you have had various strange experiences to be with her, from confronting her parents who by the way, are demons, so GF is also a demon, facing a monster with a lemon head who wanted to eat GF (in a bad way) having to deal with a spirit trapped in a dating game since that spirit was GF's boyfriend and her father, he put it there (you develop week 7 onwards) and you have also had to deal with a mercenary, Pico, he was hired by your demonic in-laws to kill you but by chance of fate, Pico managed to like you, so for now he will leave you alone.

GF, Pico y Tu (FnF Universe)

@Fer