I DON'T OWN ANYTHING EXCEPT FOR THE WRITING Rated R for possible lemon Mephisto and Rin own you though

Mephisto x Reader fic, will have some smut, fluff, and angst throughout. Has triggering content for some; please don't hurt yourself, it's just not worth it. Woof. This work is incomplete and will remain as such. I'm sorry. I'm really sorry.