Aside from the art, this is unironically the worst thing I've ever read. 

Jaekyung (who I'll just refer to as J to save space) has a lot of flaws.  

I think a good example is in the s** scenes. I’m not gonna too in depth because there's no space, but there's little to no consent in any of the s** scenes and most of the time, Dan (who I'll just refer to as D) was in actual pain. 

I’m fine with flaws in characters, as long as we see them as flaws and not just “they’re just like that”. J has never had any consequences for his actions.

In terms of the relationship itself, there’s a clear power imbalance between them, and I don’t just mean physically, but in every way possible. 

One, J turned himself into D’s provider/employer, meaning without him, D wouldn’t be able to make enough money to live. Two, D was forced to live with J because his house was destroyed, meaning without him, D would be homeless. Three, he’s indebted to J because he paid D’s loans away and paid for his grandma's hospital bills. The third could almost be seen as kind or loving, except the fact D’s still in debt, but to J instead of the loan sharks or the hospital. 

All of this effectively makes D powerless in every way. Meaning regardless of abuse or ra**.. or if he was just unhappy with the relationship, he can’t leave. The fact he has no real way out even if he wanted to leave is extremely toxic in of itself. They lack everything a relationship needs. Human decency? Empathy? Communication? No clue. 

I have a lot more to say, but not enough space. Comment if you want more of my complaining.