Asagiri, Kafka

iyutani

Over a decade before the events of the manga series, a chance encounter leads professional bodyguard Yukichi Fukuzawa to begrudgingly take an arrogant boy genius named Ranpo Edogawa under his wing. Their first job brings them to a local theater on high alert after receiving a bizarre death threat-a challenge that will require both Ranpo's brains and Fukuzawa's experience. The aftermath spurs Fukuzawa to establish the Armed Detective Agency, an organization that takes on dangerous jobs even the police won't handle!

(Source: Yen Press)

Bungou Stray Dogs: Tanteisha Setsuritsu Hiwa

Bungo Stray Dogs: The Untold Origins of the Detective Agency

文豪ストレイドッグス 探偵社設立秘話

Hoshikawa, Shiwasu

It's been roughly one year since Chuuya Nakahara joined the Port Mafia, and he's got his sights set on an executive position. But as he makes plans to move up, a man by the name of Paul Verlaine—claiming to be his younger brother—appears and vows to assassinate everyone he cares about! Now, Chuuya must team up with Adam, a European A.I. investigator, to stop this lunatic before the storm swallows Yokohama once again...

(Source: Yen Press)

Bungou Stray Dogs: Stormbringer

文豪ストレイドッグス STORM BRINGER

Shikishima, Shiki

Kaibou Tantei

Necropsy Detective

解剖探偵

Yosumi, Nomado

Vamdead

ヴァンデッド

Kaminaga, Manabu

Oda, Suzuka

Shinrei Tantei Yakumo: Initial File - Shikou no Bias

Psychic Detective Yakumo: Initial File

心霊探偵八雲 INITIAL FILE 思考のバイアス

Yoshida, Morohe

A white snake who is a divine messenger and a childhood friend with a mystery. Entangled obsessions in a Japanese-style fantasy. Tsubaki, a high school student with a predisposition for bad luck, has a one-sided love for his childhood friend Sakuyo, who is both beautiful and talented. Then, one day while leaving school, they are randomly attacked on the street. In the ancient capital Kyoto, a love story defying fate unfolds.

(Source: Akita Shoten, translated)

Byakuda no Hanamuko

白蛇〈びゃくだ〉のはなむこ

Lovecraft, H. P.

Tanabe, Gou

Meijoushigatai Mono: Lovecraft Kessakushuu

H.P. Lovecraft's the Unnamable and Other Stories

名状しがたいもの ラヴクラフト傑作集

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

Ulthar no Neko: Lovecraft Kessakushuu

H.P. Lovecraft's The Cats of Ulthar and Other Stories

ウルタールの猫 ラヴクラフト傑作集

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)

Manga Like Hyakki Chousho: Kaii Chousa wa Kochira made