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

Shikishima, Shiki

Kaibou Tantei

Necropsy Detective

解剖探偵

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

Mugeum

In 1960s America, stoic and solitary ranch hand Dennis is hired for a summer of shepherding under a strange warning: trust nothing but the sheep. A month in, a stranger named Tod appears, claiming to be a hunter passing through. Though Dennis is wary, he finds himself slowly drawn to the man, unsettled by the pull between suspicion and desire. As the line between threat and connection blurs, tragedy strikes when a coyote slips past his guard and kills one of the flock. With loyalty shaken and feelings he can't name, Dennis must choose. Will he hold on to his doubt, or take a chance on the one thing he's been told not to trust?

(Source: Lezhin Entertainment)

The Fallen Lamb

추락하는 양

Do, Hae-neul

Mingnew

Gajun and Sunwoo, students with supernatural abilities, are trapped in a time loop during their school trip.

After witnessing their friends' deaths, Gajun realizes Sunwoo's death triggers the loop. He becomes fiercely protective, while Sunwoo, confused, tries to protect Gajun in return.

(Source: Manta)

The 11th School Trip

11번째 수학여행

Baek, Nara

Oscar

A thirst for revenge drags Raymond into a sinister game at his new boarding school, as he finds himself the mouse within a dorm of twisted cats who wish to devour and defile him in the worst ways imaginable.

(Source: Tappytoon)

The Bad Life

불우한 삶

Tsuyuhisa, Fumi

Yoshiomi lived in a village steeped in twin worship, where he was forced to bear the burden of a "curse." One day, a certain incident brings him into contact with police officer Norito, and the two gradually find themselves drawn to each other. But then, his comatose twin brother Miwa suddenly vanishes...!?

(Source: Shinshokan, translated)

Komadori wa Imawa no Mezame

こまどりは今際の目醒め

Seorok

Five years after the war, peace has settled over the victorious nation of Formapolis...until a strange series of incidents threatens to shatter it. Corpses with grotesque modifications, known only as "specimens," begin turning up in the capital.

Detective Kleine, assigned to the case, is ordered to investigate every detail under the guidance of the state's special security division. His assigned partner? Doctor Agato, a brilliant but secretive scientist from the defeated nation, whose charm seems as deliberate as it is disarming.

As Kleine is drawn deeper into the mystery, he comes face to face with Tristan, a man with unnatural powers and a disturbing connection to Agato. The deeper the investigation goes, the more it becomes clear: this isn't just a case about dead bodies. It's a collision of past sins, buried experiments, and a bond too dangerous to name.

"I wanted to see you again, Professor."

(Source: Lezhin Entertainment)

The Case of Doctor Agato

닥터 아가토 리포트

Chaepali

Yuwol

After his shaman grandfather passes away, Yoon Dam suddenly gains the ability to see ghosts—a gift he would rather not have. The only solution? The power of a goblin. Enter Lee Dohan, who claims to be exactly that. But there's a catch: every time Dohan tries to harm Yoon Dam, mysterious wounds appear on his own body instead. Intrigued by this bizarre connection, Dohan proposes a deal: "Why not just let me be your tutor?" Bound by strange circumstances and their own hidden agendas, the two set off on a journey neither of them could have imagined...

(Source: Lezhin Entertainment)

Finders Keepers

단밤술래

geumsu

To the rest of the world, Ju Haram is the picture of innocence and grace, yet his nights tell a different story. From the vantage point of a stalker, Haram's modest reputation is a curated lie as he brings a revolving door of men back to his bed. Lost in a world of feverish fantasies, the observer has spent months imagining being the one selected for the night. The line between reality and obsession finally blurs when Haram makes his move, inviting his shadow into the very home he has been haunting for a year.

(Source: Lezhin Entertainment)

Marked

실과

Penguin

In a world where implanted neural chips allow investigators to interrogate suspects through their own memories, detectives Kim Jinyeong and Seo Jisu prefer the old-fashioned method of chasing criminals on foot. Officially, they are colleagues-turned-lovers who divorced years ago; but off the record, they continue to seek each other out after work, haunted by a tangled relationship that neither has fully let go of. Then, one chilling Christmas night, Jinyeong disappears without a word. Exactly one year later on Christmas Eve, he returns and stands before Jisu as if nothing had happened. Where has he been, and what truth hides behind the silence of that missing year...?

(Source: Lezhin Entertainment)

The Ghost of You

고스트 인 더 타운

Changsick

Soji

A man is found murdered in an apartment at 19 sunset Street. the prime suspect is Leon Devonport, the victim's lover, and all evidence found on the scene of the death seems to point to him. In order to prove his innocence, Leon seeks out Benjamin Wolf, a once-famous detective who has now retired from murder cases due to an incident in his past. Benjamin had long stepped away from murder cases, but at Leon's desperate request, with a bit of flirting, he reluctantly takes the case and begins to investigate. As the investigation progresses, Benjamin uncovers hidden truths behind the case and the complex relationships between all parties involved. What is the truth hidden behind this "murder?" What is Leon hiding from Benjamin?

(Source: Lezhin Entertainment)

A Murderous Affair at 19 Sunset Street

선셋 19번가 살인사건

Lovers, Cats, and the Killer

12 Manga Like Lovers, Cats, and the Killer