Hi

https://www.mangago.me/read-manga/340_days/

https://www.mangago.me/read-manga/my_student_can_t_be_a_psychopath/

https://www.mangago.me/read-manga/american_ghost_jack/

https://www.mangago.me/read-manga/you_at_first_sight/

https://www.mangago.me/read-manga/this_witch_of_mine/

It's not really underrated but have you read orange marmalade? It's REALLY good

Instead i watched the kdrama so i dont really know if i want to read the manhwa ╥﹏╥

Wasn't a fan of the drama either but the webtoon is quite good actually!

Dramas can be really cringy but i swear the webtoon is good.

The mc is actually likeable (in contrast to so many romance mc's....) And you actually empathize and get immersed in the story.

I really recommend giving the first few chapters a chance, at the very least.