In which Selina Choi's parents never left until later on and trains her hard, and she becomes bloodthristy with fights... And eventually become partners with Gun and Goo. Collections of the times they hang out with each other.
Being forced by his parents to get good grades at school and kept locked up at home while other kids hung out with their friends, Beomgyu decides he's gonna change and go against his parents after he meets Choi Yeonjun.
But going against his parents gets Beomgyu into something more than he wanted.