bored

Kono oto tomare
White blood
Herol killer(can be read on webtoon for free)
Jungle juice (also on webtoon for free)
Mercenary enrollment
Mr villains day off
School bus graveyard (can be read on webtoon for free)
Ki sisters

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

Explanation: In a society that was taken over by monsters called bugs there are some people who were injected with the blood of the person who saved them, they were granted powers and called butterflies

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

Explanation: A guy who was an brainwashed and forced to be an assassin was killed by the person that made him and was reborn and wants to get revenge against him

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

Explanation: A college students day was turned upside down when monsters started appearing on campus and people began getting super powers

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

Explanation:The worlds strongest martial artist takes in a girl and is raising her

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

Explanation:This boy was tossed into a forest since he had something evil in his body and was sent to die but survived and wants to leave the forest

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

Explanation: Deon the MC is a double spy for the demon king and Human King and doesn’t know his true strength

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

Explanation: this guy was one of the strongest rankers but got sent back in time since most of the top rankers died trying to fight back against outer gods

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

I forgot to explain the last one but basically it’s about a boy who was super mistreated in his first life and wants to make sure everyone is happy in his next life