Notes

The au where Oga contracts young (ie middle school), and his contract is the Royal Contract. He’s officially contracted to newborn baby Beel, but it sorta extends to the others as he develops relationships with the other demons who are there and stuff.
(learning how to open portals -only in nature and at a price- so that other demons can come out to play)
->most of demon events happened in middle school, and Oga came out victorious (and paid a heavy toll).
-> and after the scuffle with the Solomon Company, he frees the other sins (and the other freshmen), and Furuichi’s memories are all scattered and lost. So cue the traveling through dimensions and checking out haunted areas to fight demons to get back Furuichi’s memories.
(furuichi goes to St. ishiyama, and Miki silently keeps an eye out for him…? Meanwhile, people are worried at how there’s that delinquent boy that’s waiting for Miki after school again. And a connection that no one understands, and no one knows if that’s a good thing or not.)
-> And Miki is so ashamed that he couldn’t do anything but get in the way and make shit work (because he was caught and that’s why Furuichi gave himself up-but the worst part is that Oga isn’t blaming him for anything.) Desperate!Oga trying to piece his friend back together, but the more emotion and power he fuels into this-the stronger Furuichi’s emotions become and it makes it too much
-> takes over Ishiyama (because the freshman is good at picking fights and Oga’s really good at winning them). And takes the freedom to be more. School gets wrecked when a demon meeting goes really, really bad. And everyone scatters.
-> Ishiyama squad gets close. And goes to anything haunted, really.
-> ending with either Furiuchi becomes again at the price of Oga’s new friends, otherwise, the world will crumble.
(->My love is in here. Take it.)
(and for the purpose of this story, Baby Beel was born a little earlier)