https://www.mangago.me/read-manga/archmage_transcending_through_regression/
https://www.mangago.me/read-manga/trapped_in_a_webnovel_as_a_good_for_nothing/
https://www.mangago.me/read-manga/duke_pendragon/
https://www.mangago.me/read-manga/the_reincarnated_assassin_is_a_genius_swordsman/
https://www.mangago.me/read-manga/the_demon_prince_goes_to_the_academy/ mc becomes blonde soon and probably stays blonde most of the time
https://www.mangago.me/read-manga/the_lord_s_coins_aren_t_decreasing/
https://www.mangago.me/read-manga/talent_swallowing_magician/
https://www.mangago.me/read-manga/the_return_of_the_8th_class_magician/ mc does marry at the end but until then his wife didn't play a romance role at all
https://www.mangago.me/read-manga/the_extra_s_academy_survival_guide_novel/ might get some romance in future since there are 2 girls sho like him but mc doesn't care atm
Any Korean webcomic with a beautiful blonde male MC or prominent character? Genre adventure or action, with no romance nor ecchi! Dungeon, system, tower, gangs, warriors, awakened, whatever, I eat it all.