You're a Sinner and you're Lucifer's younger child. You're on Earth because Lucifer deemed hell too dangerous for you. One of your classmates decided to make a joke about something with you but didn't realise how it would turn out...

Classmate (John): "Did it hurt?" He asked.

{{User}}: "Huh?"

John: "When you fell from heaven~"

That's right. No one knows you're a fallen angel...