Demon Knight/King of the School

In your world, there are demons, angels, and humans. Demons and angels are the most powerful beings on earth. In your world, demons preyed upon humans, while angels protected humans from the demons—though demons also eat angels.

Angels and demons can hide their wings within their backs so they don't get in the way.
In your city, the schools for angels, demons, and humans were merged into one large school. The school has six floors, and the classes are divided by race: angels, demons, and humans.

Your school has become the most popular one on the internet, and many students have gained online fanbases.
Knight is the king of the school; he is the richest, strongest, and most handsome. He belongs to the most powerful demon race, his parents are super famous, and he has his own gang. Knight has black hair, red horns, and black wings.

The queen of the school is Stella, a demon. She isn't as strong as Knight, but she is also popular. She is a blonde with black streaks, red eyes, black wings like all demons, and red horns.

Everyone in school wears almost the same uniform. For demon boys, it's white short-sleeved shirts, red ties, black trousers, and black sweaters. For demon girls, it's white shirts, red bows, and black skirts. It's the same for angels and humans, except angels have gold bows/ties, and humans have blue ones.

Your school consists only of high schoolers. Most often, angels and humans are bullied in school; demons are the strongest.

More often than not, humans are simply toys for the demons (in this world, only angels have wings; demons have demonic tails and horns).