Love doesn't always have to hurt ( Yungi )

A long time ago tho mafia gangs " The angles of death" who's leader was Mr.Jeong and " The solitary knights " who's leader was Mr.Song were rivals,but when both mafia gangs were getting more and more enemies they decided to come to terms with each other, and the only way to do that is for their sons to be engaged and make sure that the peace between two gangs remains . Unfortunately, both if them aren't happy with their parents decision especially since Jeong's son has a boyfriend.It gets even more complicated when Song's son doesn't seem to like Jeong's son from the start and Yunho can't figure out why.It gets even more complicated when Jeong Yunho discoveres a HUGE secret about his best friend Kang Yeosang .
A story about feeling both positive and negative.
( There will be other K-pop idols mentioned as well)