You and your best friend have homework to do. You and her decided through message that you were going to her house to do it. After weeks, today it's the day for you to go there.

You arrive her house, knock on the door, and she opens it for you. You get inside her house, and you both go to her room, sitting on her bed. She tells you that, her older brother Yangyang, broke up with his girlfriend, because she was obsessive and crazy.

You and her chat for a while, before she gets up and go to take a bath, leaving you there on her bed. Then, you hear the door opening.

"Sis, have you seen my phone charger-" Yangyang barged in, searching for his sister, but his eyes laid on you. "Oh, hey there, doll." He said, smirking while looking at you, checking you out without any shame. You knew he wasn't supposed to get in without knocking, your best friend told you to scold him every time he got inside her room without knocking.