Hiruzuka, Miyako

The manga centers on three girl friends who spent their youth in the high school softball club. Now in their 30s, they turn their lives around and open a detective agency in Asakusa.

(Source: ANN)

Sayonara Diamond

Goodbye, Diamond.

さよならダイヤモンド

Nagate, Yuka

The spy suspense manga's story centers on Japan's weakest intelligence agency, as they take on a national defense crisis.

(Source: ANN)

Habou no Wadachi: Kouan Chousachou Chousakan Hase Kuuya

ハボウの轍〜公安調査庁調査官・土師空也

Nagata, Kitsuneko

Asa and Kame meet on their first day of serving in the Ooku—and quickly discover that things there are more complicated than they imagined. A strange cult, an unexplained delay in a palace festival, and even samurai in the Ooku are just some of the oddities they encounter. And what does the Medicine Seller, who peddles love potions and mononoke exorcisms, have to do with any of this...?

(Source: MangaDex)

Gekijouban Mononoke: Karakasa

劇場版モノノ怪 唐傘

Fukami, Makoto

While attending a meeting as a Chief Inspector of the Public Security Bureau, Akane Tsunemori received a report that an incident had occurred on a foreign vessel, and this was the beginning of a big and unexpected case.

(Source: IMDb)

Shousetsu Gekijouban Psycho-Pass: Providence

小説 劇場版 PSYCHO-PASS PROVIDENCE

Kalkan

Zenzo

Nekotan! Nekomachi Kaii Kitan

Welcome to Cat Town

ネコたん!～猫町怪異奇譚～

Atarashi, Yasumi

Shousetsu Gekijouban Mononoke: Karakasa

小説 劇場版モノノ怪 唐傘

Noramame

One day, private detective Kanako Udagawa receives a request from client Yuiko Shinonome to conduct surveillance on her fiancé. But when Detective Udagawa drops by the fortune-teller that the fiancé's been visiting on the sly, she encounters a boundlessly bubbly woman called Sakura! See the slapstick suspense unfold with this pair of polar opposites!

(Source: MANGA Plus)

Tantei to Uranaishi

The Detective & the Fortune Teller

探偵と占い師

Nagase, Sarasa

Kamikou, Chizu

When it comes to light that Octavia de Reine isn't a legitimate member of the noble House of Reine, she swiftly finds herself disowned. At first she takes this in stride...until her power hungry father and ex-suitor start vying for the house full of mysterious heirlooms that her doting grandmother left her. Little does her family know that she's destined to inherit an even greater legacy. Olivia hopes to follow in Granny's footsteps and become a famous detective, after all! She'll face off against young noblemen, phantom thieves, and magical items corrupted by demonic forces. Oh, and one vengeful angel queen. Moreover, who's this suspiciously young marquis that seems so smitten with her...?

(Source: J-Novel Club)

Kandou sareta node Tanteiya Hajimemasu! Jitsu wa Boukoku no Joou da nante Naisho desu

勘当されたので探偵屋はじめます!実は亡国の女王だなんて内緒です

Yosumi, Nomado

Vamdead

ヴァンデッド

Yokomizo, Seishi

Miyakawa, Fune

Honjin Satsujin Jiken

The Honjin Murders

本陣殺人事件

Shikishima, Shiki

Kaibou Tantei

Necropsy Detective

解剖探偵

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

Keishichou Soushi: Fuutarou Meiji Gekijou

Manga Like Keishichou Soushi: Fuutarou Meiji Gekijou