That’s what makes him scarier
He waited until they had everything to lose! (๑•ㅂ•)و✧
and not even his revenge, it was all for Kirin, and he didn't tell Kirin what he did
it's for the lee siblings. you can just see how big were the influence of the brother and sister duo...
Since he doesnt have empathy it might not be hard to wait but it did showed how much the two Lees important to Kang Moo.
this man waits 8 years to get his sweet revenge