
SPOILER +ending explanation
ok so it ends v vaguely without an actual scene of him dying but more show shows his mental state
basically kwon went abroad and he wasn't rlly close with hansol anymore either so he was alone again. his dad also became more violent but he has nowhere to go because his mom doesnt want him
his grades keep falling and so does his mental health and his last line was "if everything is my fault, do you think i'd be able to live on?" basically he's saying everything is his fault and he cant live anymore which is why the conclusion is that he commits suicide
SIDE NOTE: i read the author's epilogue and they answered some questions and said that kim kwon is someone who is deprived of love and that to him, lee jaekyung is a friend that he wanted to hold on to because he would never meet a friend like him again

yk i kinda wanted her to not cry until after the date and then he would see her crying by herself and be emotionally scarred and never able to erase that memory for his brain
then be plagued by that for the next couple of years until he becomes rlly successful and then tries to find yuna again and then she plays hard to get and breaks up w him at least once
but they would end up together nontheless
i am so empty inside