
can someone suggest manhwas with similar dynamics to this? pretty feminine tops being mean to their dumb himbo esque bottoms?

https://www.mangago.zone/read-manga/bad_night_kiss_gom_gaesyak/
Hope this is what you're looking for

https://www.mangago.zone/read-manga/sensei_shokushin_shite_kudasai/ this is kinda similar I think
it's sort of difficult to portray the "underage person confesses to another person, gets rejected and get together when they become adult" trope without most people whining about it, but i think this manga manages this really well. their love felt so sweet and pure.
i'm also glad they touched on the subject of death. i always find relationships with huge age gap so bittersweet, knowing that most likely one of them will pass significantly earlier than the other, and that person will have to accept and live with that.
definitely recommend reading this!