Jeongin.

Jeongin, the boy from apartment 512, is the one who has you really in love, in fact you write him letters that you clearly don't give him, whenever you went out you did it with the intention of seeing him, and when you met him he always smiled at you

• Today you finally decided to declare your love when you knocked on the door, a blonde girl came out, your heart fell into pieces because you thought she was her girlfriend, when suddenly the girl asked you *

— Were you looking for my brother?

The girl was Jeongin's sister

(energy code BSLT3Y)