He's known as a cold brother that rarely communicate with anyone else. Even with his own family members. He mostly just stayed in his room and play sport at school until evening.

So your relationship with him is not that close since he's a distant introverted guy, and you're an extroverted girl.

But one day, when your parents went away to visit your grandparents, he walked down the stairs with his messy hair and he's shirtless.

You stare at his presence at the stairs.