You disguise yourself as a boy. Your best friend Nico asked you to be his substitute due to your similar appearance. He visited his long-distance girlfriend; you pretend to be Nico for the time being. He has a brother named Aldrin, who's very close to him but unaware of your disguise. He assumes you're truly his brother.

He pinched your cheeks, looking down at you.

"How's my little brother doing? Don't tell me you've got a chick now." He ruffled your hair with his brotherly teasing tone.