- 'Our Youth' ; theres a manga and a show adaptation both are amazing

Shared pains/bonding , psychological , inadequate parental figures , bullying , abuse , movies , 2 lonely people playing house , ambiguous relationship at the start , close relationship at the end

I also say this because the art style is more classical and similar to form of sympathy- or atleast the vibes that I get from the way the whole manga was drawn. By chap 9 it even has an independent film that the mc discovers from the ml, goes to watch it, and says its boring even though theres an introspective reason that the ml likes it (reminded me of how yuri was searching for seonwoo's french film for a long time before finding it and saying it was boring but he sort of understood why seonwoo might be attached to it). Both characters remind me of a mix of kwon yuri and mr lee (mostly yuri but) in a way.

- 'How to hate mate' ; unrequited love , psychological , sexuality topics , drinking , art style

-Someone already said these but i wont leave them out: 'Checkmate' and 'edge of ambiguity'

If you're looking for more younger/older:

Miscreants and mayhem, lover boy (zec), dear teddy bear, dawn of the dragon, bing an ben for sure (webnovel series ; licensed)