Geulsseuneun Gigye

One day, Yeon Woo-hyeok falls into the martial world and becomes a civil servant. He is a seasoned player of the martial arts detective game, Great Hwan-Guk's Famous Bodyguard. Without any warning, he finds himself reincarnated as the bodyguard from the game. Fortunately, he realizes that the game's events are unfolding exactly as he had memorized them. As he begins solving cases, he starts adapting to his new life as the bodyguard. But his joy is short-lived when he discovers his ability, "Yeongan," is actually the opening of his dantian. Because of this, he faces the imminent danger of dying young. Wait, even just being a bodyguard is tough, but now he must learn martial arts and become a powerful master?!

(Source: Kakao Entertainment, translated)

How to Live as a Civil Servant in Murim

무림 속 공무원으로 살아가는 법

Shida

A girl's memories, emotions and humanity are shattered like so many pieces of a puzzle. Lacey, a girl who's lost everything falls into a labyrinth of chaos. To step inside, is to step into a world of chaos and death. The Gibbet Room. Even so, the girl opens the door, to find what she has lost, herself.

(Source: Takeshobo, translated)

Gibbet Room

ギベットルーム

Taebal

Kim, Hongtae

No one knows why these people are stranded here with death looming in the corner. As loneliness creeps in, it becomes all too easy to seek solace in others. But they must trust no one but themselves. Remember, the goal is to survive.

(Source: Webtoon Entertainment)

Survive

서바이브

Katou, Yoshie

Yotsuba, Yuuto

It's been 25 years since Earth was invaded by beings from another realm. Now, everyone's life is shaped by a single measure of strength—the World Ranking. From the countryside of Gunma comes Kinoko Kino, a high school girl with zero communication skills, trembling her way through city life with just one dream: to make a friend. Little does she know... she's actually the World Ranking's #1: UNKNOWN!

(Source: Shueisha, translated)

Tokyo Kinoko: Sekai Ranking 1-i no Comyuryoku Saijaku JK

東京KINOKO〜世界ランキング1位のコミュ力最弱JK〜

Kawada, Akio

Ringo Ame Third

Koushaku Reijou no Rouraku Mission: Maou to no Seiryaku Kekkon ga Jinrui Saigo no Kirifuda desu!... tte, Maou ga Onnanoko no Baai wa Dou Sureba Ii no desu ka!?

公爵令嬢の籠絡ミッション～魔王との政略結婚が、人類最後の切り札です！…って、魔王が女の子の場合はどうすればいいのですか!?～

Kanemaki, Maki

The hero who defeated the Demon King and saved the world has died. Gil, a half-elf who carries his blood, heads eagerly to the funeral of the "father he's never met" after hearing about an inheritance, but...?! The womanizing hero's love-starved children collide in a ruthless, blood-soaked inheritance battle! Will it end in a mountain of corpses... or something else entirely?! A rare and outrageous post-adventure isekai story!!

(Source: MANGA Plus)

Yuusha Izoku

The Hero's Bereaved Family

勇者遺族

Yamaguchi, Mikoto

Ogino, Yuhey

Kairu Mitsushima, a middle-aged fighting game player who had his life changed after meeting Daigo Umehara, a "living legend" of the world of fighting games, is reincarnated into another world after a traffic accident...This world turns out to be a heroic world where battles are fought using fighting-game knowledge and techniques...!?

(Source: Shueisha, translated)

Tensei Kaku Gamer: Oji demo Kateru Isekai Kouryaku

Reincarnated Fighting Gamer

転生格ゲーマー ～オジでも勝てる異世界攻略～

Oikawa, Tooru

Isekai H Eiyuuden: Bishoujo Senshi-tachi wa Saikyou Gunshi no Mucha na Onegai ni Sakaraenai

異世界H英雄伝 〜美少女戦士たちは最強軍師の無茶なお願いに逆らえない〜

ippatu

Shoujou-hime

猩猩姫

Rokujouhan

Commit a sin, and a "bug" attaches to you!

Misao is a young boy who can see the "bugs" that attach themselves to people who have committed sins.
Small bugs for minor sins, large bugs for grave sins...

Through these bugs, Misao is able to measure the weight of a person's sins. However, he gradually begins to see bugs that defy these rules, and at the same time, strange incidents start occurring around him...

(Source: Shogakukan, translated)

Warui Mushi

わるいむし

Ishida, Umi

A horror mystery involving different species. The story begins when middle schooler Ryuunosuke visits his grandmother's house on an island. As Ryuunosuke walks past the stairs leading to the second floor at his grandmother's house, a strange, plant-like thing extends down from above. Intrigued, Ryuunosuke tries to climb the stairs, but his uncle stops him with an unfamiliar expression, saying, "What are you doing?" and "You'd better not go up." That night, however, Ryuunosuke's curiosity drives him to go upstairs after all...

(Source: MangaDex)

12 Manga Like Bio Hunter