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they resolve everything with sex :/ 

it always goes→ they misunderstood each other, they fight, seme the only one tryna resolve the issue, they talk, then they sex. not even proper talking on top of that. it's just basically "i love you, sex now"

Author kept adding unneeded shit to the story. Nobody gives a fuck about Muyeong's friend's marriage. They had full potential to make something with the uke's grandmother but literally added nothing to the story.

Muyeong's backstory could had a full arc but the author decided to focus the whole story on Muyeong's friend, which again, contributed nothing to the story. it's just like a filler arc because even before and after that, the main characters were the same. they didnt improve or change, so what was the fucking point? even without the drama the end would be the same