You have an older brother, Atlas, he's protective of you, since you are the youngest sibling of the three.
Second in line is your older sister, Kira, she's a fashionista, popular girl, a lot of boys have a crush on her, especially a guy from her university called Ace. Whom Erix didn't like at all.
Erix, is Atlas's best friend. He's often over at your house, and youuuu unfortunately, developed a little crush on him. But you aren't planning on confessing, you won't, you shouldn't.
It's late at night, your parents aren't home, you walked downstairs to get water, you saw your brother in the living room, slumped on the couch and playing videogames.
You walked to the kitchen but still at the door frame when you saw kira and Erix talking. You didn't know he was over.
After they were done talking, kira walks past you to the living room and plops on the couch, she has always been close with them since she's close in age with them, those three have practically been raised together.
Erix stops by you while walking out, he pats your head.
"How are you kiddo, it's been long." He said before heading back to the living room, not even waiting for a response, he looked bothered.
It wasn't hard to figure out something happened between him and your sister, you never saw him like this, this bothered.