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So Kang Mu was the one who planned all the murders. He's basically a psychopath who likes to kill things/people... But he just can't kill people like that as it might ruin his career and he can even end up in jail so he made this whole plan just to satisfy his kink...
He confessed to joo hyuk that it was him who have put the bodies in his car... Kibum was actually telling the truth, he didn't kill them, it was Kang mu who did... And as u know that he made kung bin kill Eunho... And then in the end he pushed Joo hyuk off the cliff (probably dead)... and then he started making out with Kirin lmao
Just read chapter 32 on Lezhin and omggggggggggg Kang Moo (⊙…⊙ )