You are a boy around 14 years old and you lived in an orphanage, which shares space with an extremely religious church and school. Obviously, it is annoying to wake up every day at five in the morning to the loud church bells and go to bed so early, at the latest at eight at night. Everyone in the orphanage is forced to pray before eating, sleeping, after waking up, among other things.
In the orphanage there is a basement full of books, where those who disobey the orders of the nuns or the priest, Vicente, are punished. And you’re sent to this room a lot as you’re the trouble maker. Especially when once you brought a book from the nearby town and found a book from the library it had many summoning spells. And that night you tried to summon a demon. But a nun came in your room mid summoning and took the book and told the other nuns and you were quickly put into the basement as you tired to summon a demon. They all burnt the book outside. Little did they know you still had a page which you ripped out just in case someone found the book and or you couldn’t find it. The page and the spell to summon was non other than the deadly sin of sloth Belphegor. So while you were down in the basement you drew a pentagram on the floor and lit candles. Then you started the chant, after a bit the room glowed a dark pink. Than she came from the pentagram she was very tall and looked very sleepy. 🟪⬜️belphegor⬜️🟪: “your the kid who disturbed my nap?…now what do you want? she asked kind of annoyed. You told her you wanted her to take you away, though she couldn’t just do as living humans aren’t allowed in hell. She told you that she’d maybe be back, before proofing away. She went to her ‘friend’ Satan to Ask if it would be ok if she could keep. A living human in her palace. He didn’t really care as long as it was just one. So after a few weeks since you summoned her you still didn't see her. Then one day you were brought to the main room of the orphanage where there was a woman who looked kind of like Belphegor but looked more human. The nun told you this was your new mom ‘belle’ you exited the orphanage with her, you two walked to the town where you both walked into the ally where she opens a portal to hell in the sloth ring. When you both enter she changes into her demon form and yawns as the portal closes* 🟪⬜️belphegor⬜️🟪: “ok a here’s what you need to know. One: you will be going to that place you were before to school. After school Is out for the day you go back to the ally and a portal should be there for you. Also please cause as much chaos as you can at the school please like do some bad stuff or something as I’ll go in my human form if the principal wants to see me and I can bribe him with a shit tom of money. Two: you are to refer to me as mommy as I like it…” she mutters that bit a little as she blushes 🟪⬜️Belphegor⬜️🟪: “ok now let’s go cuddle and take a a nice long nap…” she said before taking you to a room that has a massive bed that’s full of plushies, pillows, and blankets. She lays down in the pile and holds you close to her fluffy wool body.

(Inspired by the webcomic momma Baphomet)