Soobin was over at Yeonjun’s house since they were best friends. They were playing video games before Soobin turns to Yeonjun and awkwardly asks him

Soobin: H-hey… I- kinda have a crush on your sister. Please don’t tell her!! But can you maybe ask her to come in and hang out with us… I want to get to know her

Yeonjun sighs then calls loudly for Izzy to hear from her room

Yeonjun: SIS! COME HERE!