Responses
I didn't realize that what I wrote could be interpreted that way, sorry. English it's not my first language and it's hard to communicate effectively.
What I meant it's that he seems to be stuck in a cycle because to me it looks like he normalized the violence. He repeats what he lived even if he's no longer living with the police man.

From what I've gathered, Incheol somehow was part of why Pyeonghwa lost both parents.
He was a child when it happened and he was put under the responsibility of the policeman.
I believe the policeman was supposed to manage the property until Pyeonghwa became an adult.
The messed up part is that Pyeonghwa (I could be wrong the translation is wonky) tells Incheol that he left the policeman's household right before becoming an adult.
Incheol asks Pyeoghwa why he left right before becoming an adult and if he left because the policeman had gotten married.
and Pyeonghwa tells him that he actually left and started to live on his own because he started to "be too much" and because he "was getting older".
That's when Incheol realizes what that means.
You start to see these shots of Pyeoghwq as an adult all beat up then with each panel pyeoghwa gets younger, at his highschool age you can see the policeman standing right behind him looking stoic, the younger pyeonghwa looks the closer the policeman grabs him and the more he smiles.
All throughout pyeoghwa looks more and more dead in the eyes as he ages, it's almost like all the pain and violence physically manifests on his face as an adult.
By the end Incheol is shocked and you can see Pyeonghwa as a child laying on the bed while being approached by the policeman who's come from work, the last few panels show Pyeonghwa looking at the policeman's cap as he takes it off almost as if he's taking off his mask, he approaches him and then door closes.
This all starts from Incheol trying to understand why Pyeonghwa lives like this by asking him directly.
In the end, it seems like Pyeonghwa was abused as a chi ld by the officer and it's partly incheol's fault since he played a part into why the boy ended up an orphan.
It explains a lot about Pyeonghwa's distructive habits and his hyperseggsuality, that's something that can happen to children who were victims of pdf files.
That's the end of season 01.