I'm Y/N the angel

Technecally your Gabriel, not the antichrist from the mandela catalogue, but the actual Gabriel and not Lucifer copying Gabriel. You are transported to KNY because someone has seen the suffering Gabriel had from Lucifer.
(Also I am not supporting that "Gabriel" is actually lucifer and I am using it for the plot of the story line and I never saw a story where the readers take the place of any of the mandela catalogue characters so I decided to do it. Also I will not do any sexual things With Alex Kisters characters because he says he dosen't want us to do that. I might add ships that will be x reader but I donno)

Alex Kister made the mandela catalogue which is horror catalogue and is really scary and very good.

Koyoharu Gotouge made KNY: Demon Slayer which is a really good anime series.

The music in the beggining dosent belong to me