My Serial Killer {P.J.M}

We both heard some footsteps. It came closer and closer...in the end I saw a boy standing behind the guy with a gun up to the guy's head.
???: "what the hell are you doing dude??!!"
Guy: "I should ask you the same boy.."
The guy was ready to turn around but then...
*READ TO FIND OUT*
Will two people's lives change after one fateful night ...for Zhi Qingqing and..Park Jimin