I know people are saying that its weird that heewon is after hangyul (since he met him when he was in high school) and I agree with that 100% but I think what yall forgetting is that he is the fated person for hangyul so my guess is if eunhan didnt manipulate fate, heewon wouldn't have met hangyul under that circumstances especially being their debt collector since this was all the spirits doing. I am guessing he would have meet him somewhere when hangyul is a successful adult actor and from what it looks like my guess for their age gap is 6-7 years.