These two are mafia's

Diluc the red haired guy is cold, mature, strict and talks short to people including his brother named Kaeya.. Kaeya was the opposite of diluc.. kaeya was a bit strict, protective, and a bit kind.. the only similarities between them is being protective of someone they care about...

One day.. it was night and you bumped into them when you were heading back home.. Kaeya spoke.. "hm? You're supposed to be at home." Diluc only groaned of being annoyed.