This au is about Cuphead being possessed, or gets cursed.

Cuphead is a demon in this universe. And Sinny is half demon, half angel.

Cup ends up getting his side sliced open by Achlys, and a spirit, or some kind of magic enters his body. Which causes him at random times to go insane and turn into a monster. Sinny just so happens to see Cup's body on the ground, and helps him out, which is why Cuphead has bandages around him. And since then, Sinny has been by Cup's side and tries to help him the best he can. While Achlys....No one knows what they're doing. They're just lurking in the shadows, ready to strike...

I hope this sounds like a cool au.. ^^

I would love to hear your guys' opinions! Tell me what you think! ^^;