The demon vigilante

Denki and y/n are friends at the age of 7, y/n is a vigilante their quirk is ender-demon and fire shandows.The quirk Ender-demon make them look like a demon with horns, tail and wings, they have one purple eye and one red one. Y/n can fly just doesn't do it a lot, y/n can teleport downside to this quirk is that they can't teach water.
The quirk fire shandows can make fire weapons from exposed body parts (like Momo but fire 🔥) and can make a portal of fire, only they can go in. The weapons they make can only be used by y/n, and can only use the portal at night. They are immune to fire and lava so that how they clean themself
P.S Denki quirk is the same but he has a negative and positive side.
Positive is the normal personality; Negative is the vigilante personality, so like 2 people in one body. Denki is smarter then he puts on