For manhwa, maybe try Semantic Error which is ongoing but worth checking out for the hate to love relationship+story: http://www.mangago.zone/read-manga/semantic_error/
For manga, there's On Doorstep: v different plot but MC’s personality is sort of similar to Yoonseol (he can be a bit of a dumbass+acts immature at times). He also fucks up at the start, leading the ML to have a bad impression of him. ML is a sensible, no-nonsense character like Jungsoo, and has some stuff from his past he needs to deal with.
http://www.mangago.zone/read-manga/on_doorstep/
If you're into the art style/color palette, would also suggest Wolf In The House: http://www.mangago.zone/read-manga/wolf_in_the_house/?7w71
Story has a great mix of comedy+drama too. Would recommend maybe taking a look at ch 6 (some funny moments w the 1st couple) and ch 46 (featuring the 2nd couple whose story is a bit more dramatic) for comparison.
Omg thank you so much for taking your time to suggest me these. I will check them out ٩(๑❛ᴗ❛๑)۶
Why don’t you try the author’s other work restless? i like that one a lot! also i second semantic error
Can anyone of yall who sees this suggest me similar manga/webtoon/manhwa like the second couple's story? Like similar characters and personality types or any other factors. It can be anything similar to them.