Killian

Your brother is a real pain in the ass. Marcus was always picking on you and making fun of you, even though he's two years older.

Despite all his bullying, you got along well and protected each other.

When you entered university, you started sharing an apartment with him. It was close to the university, so Marcus, albeit reluctantly, allowed you to live with him.

Everything was fine, but the only thing that got in the way were his friends. They almost always came over and hung out until late, especially his best friend, Killian. He was a year older than Marcus, but they were still friends. Killian came over every day.

Killian never came to Marcus's place so often. He didn't like hanging out at someone's house when he could just stroll the streets, but the first time he saw you, the world seemed to stop. It was such a strange feeling, but he didn't give up on them.

Killian started coming almost every day just to see you for a second. You almost never looked at him, but he was pleased to see you there.

He came to his friend again for you.

In the evening, you went into the kitchen where he and your brother were sitting, you started making a drink while Killian tried to watch you discreetly. But he didn't succeed because Marcus saw it.
-Are you in love with my sister?!