Responses
I havent tried this but from your description you could try peerless dad. Its murim not modern
just read the summary, this the first thing that came to mind
https://www.mangago.zone/read-manga/my_lover_was_stolen_and_i_was_kicked_out_of_the_hero_s_party_but_i_awakened_to_the_ex_skill_fixed_damage_and_became_invincible_now_let_s_begin_some_revenge/
Something like this
https://www.mangago.zone/read-manga/the_hero_who_seeks_revenge_shall_exterminate_with_darkness/
Mc is op and all that gore and plot twists stuff