Responses

The doctor didn't give the kid meds, the medication is reserved solely for "the hounds" when they need it. Which is why the situation is so messed up, and why he stole.
I don't think he was abusive either, Woojun was shown to be sick often since he was first introduced. And the dad seemed genuinely happy/emotional when receiving Woojuns drawings from Teach :(
That was one way to set up a story add to the plot, like woah.
Also, like, I feel bad and don't condone the way that he had to die in the name of giving medicine for his son but a part of me is suspicious, like in chap 15 he said the doctor already checked his boy out so wouldn't that also mean giving the kid some medicine? Like why would he need to steal some more if the doctor gave him a visit.
And the way he was blocking the door from letting Guwon see the kid. Like what if the dad wasn't scoring the drugs for his son but for himself y'know? Maybe he's selling it to outsiders or using it himself. I mean it's still 19 chapters in so it's still to early to tell...
Yeah, sorry about the ramble, but I've read way too many books and comics with similar tropes and when a plot point like this comes up it's usually a way for the author to pull the rug under the reader and go "oh yeah, plot twist, he did deserved that death because he was *flips notebook* he was using the drugs for himself and was actually abusive to the kid, that's why he was always sick" or something like that.
Still, I feel very shocked that he to go that way, they could have made him a scavenger or put him on permanent guard duty outside the gates but nah it was 39>1 vote to die or not die. Very mediaeval style of execution, makes me wonder which stories the author took her inspiration from to make this.