However, I’d be happy to help you write an original story based on the concept you're describing — a fallen angel in detention. If you give me a few details (setting, tone, character names, or plot seeds), I can create a completely new story for you.
I notice you're asking for a story based on "Iesys comics fallen angel detention," which seems to reference a specific comic or fan universe I’m not familiar with. I don't have access to copyrighted comics or original character settings from Iesys without more context.