Good action/fantasy manwhas

Noblesse
Wind breaker
Gosu
Mujang
Tokyo revengers
The breaker

Ok you wanted mahwa sry. Tokyo revengers and the breaker aren't manhwas but they are really good

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

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

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

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

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

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

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

White blood
Hero killer (with the female MC)
Pure villain
21 century knights (can be read on webtoon)