Saom

Since you didn't specify if you're looking for BL or straight. Imma just leave this here.

Btw it's bl (づ￣ ³￣)づ

P. S. The seme is obsessive AF!!

https://www.mangago.zone/read-manga/shadow_crown/

All are bl genre :

1. Checkmate
https://www.mangago.zone/read-manga/checkmate_1/

2. Roses and champagne
https://www.mangago.zone/read-manga/roses_and_champagne/

~ Ik ik veryy toxic BUT THE PLOT TWIST and smut and the art is soo good!!

3. Dreadful Night
https://www.mangago.zone/read-manga/dreadful_night/

4. Fate makes no mistakes
https://www.mangago.zone/read-manga/fate_makes_no_mistakes/
MY MOST FAV MANHWA EVERRR

5. The pawn's revenge
https://www.mangago.zone/read-manga/the_world_of_pieces/

6. Payback
https://www.mangago.zone/read-manga/payback_1/

enjoy (｡•ᴗ-)✧

These are about fighting. With fists and knives, but also sometimes guns
https://www.mangago.zone/read-manga/devil_returns_to_school_days/
https://www.mangago.zone/read-manga/killer_pedro/
https://www.mangago.zone/read-manga/baek_xx/

These are about celebrities, mainly idols, but some actors too. I think all of them have the time-traveling/reincarnation plot.
https://www.mangago.zone/read-manga/be_the_actor/
https://www.mangago.zone/read-manga/debut_or_die/
https://www.mangago.zone/read-manga/in_this_life_the_greatest_star_in_the_universe/
https://www.mangago.zone/read-manga/saving_the_doomed_idols_with_my_touch/
https://www.mangago.zone/read-manga/this_life_starts_as_a_child_actor/
https://www.mangago.zone/read-manga/my_second_life_as_an_idol/
https://www.mangago.zone/read-manga/the_second_life_of_an_all_rounder_idol/
https://www.mangago.zone/read-manga/once_again_idol/
https://www.mangago.zone/read-manga/top_star_s_talent_library/

These are adventure. Awakening powers within a system, getting shucked into a book/game, raiding dungeons, defending the world, all that jazz

https://www.mangago.zone/read-manga/how_to_live_as_a_bootleg_healer/
https://www.mangago.zone/read-manga/i_became_the_tyrant_of_a_defense_game/
https://www.mangago.zone/read-manga/weapon_maker/
https://www.mangago.zone/read-manga/trash_of_the_count_s_family/
https://www.mangago.zone/read-manga/the_s_classes_that_i_raised/
https://www.mangago.zone/read-manga/heaven_can_t_live_an_ordinary_life/
https://www.mangago.zone/read-manga/trapped_in_a_webnovel_as_a_good_for_nothing/
https://www.mangago.zone/read-manga/the_cook_of_a_perished_world/
https://www.mangago.zone/read-manga/ranker_who_lives_a_second_time/
https://www.mangago.zone/read-manga/the_only_necromancer/
https://www.mangago.zone/read-manga/how_to_live_as_a_villain/
https://www.mangago.zone/read-manga/ranker_s_return/
https://www.mangago.zone/read-manga/i_m_not_that_kind_of_talent/
https://www.mangago.zone/read-manga/omniscient_reader_s_viewpoint/
https://www.mangago.zone/read-manga/my_school_life_pretending_to_be_a_worthless_person/
https://www.mangago.zone/read-manga/standard_of_reincarnation/
https://www.mangago.zone/read-manga/sangyang_the_wanderer/
https://www.mangago.zone/read-manga/midwood/

Thank youu all for the recommendations <3