Once a legendary detective, Nagumo Keiichiro now stumbles through middle age baffled by smartphones and modern life. His quiet decline gets disrupted when Mashiro, a bold high school girl, bursts into his office demanding to become his apprentice. Though he’s rusty and set in his ways, her relentless enthusiasm drags him back into detective work. Now the gap-bridging detective duo is on the case!
Episodes
S01E011 Jul 25Former Great Detective Nagumo Keiichiro / Mashiro's Pest Extermination
Nagumo Keiichiro was once a great child detective, but age is starting to catch up with him.
S01E028 Jul 2524mWith Ghosts, Go for the Knees / Find the Real Thief! / Three Minutes Until Mashiro Explodes
Mashiro's schoolmate seeks the agency's help in catching a ghost, and Nagumo is suspected of underwear theft.
S01E0315 Jul 2524mGreat Detective Asunaro / The Ones Who Don't Realize They're Stalkers Are the Most Dangerous
A young detective lockpicks his way into Nagumo's office and asks to work for him.
S01E0422 Jul 2524mMurder at the Mansion of Screams / Maki-chan and the Generation Gap
Nagumo is invited to a dinner party at a stately old mansion... where a mass murder once took place.
S01E0529 Jul 2524mWelcome to the World of Grown-Ups / A Midsummer Thriller / Mashiro and the Agent from the Stars
Nagumo takes Mashiro to his favorite bar to give her a taste of grown-up society.
S01E065 Aug 2524mMashiro Hosts Girls' Night Out / Assistant Switch!! / Battle to the Death at 100° Celsius
Mashiro spends an evening with Azuha and Maki. Later, Nagumo and Asunaro switch partners.
S01E0712 Aug 2524mNagumo-san's Grown-Up Allure / The Lost Child and Mashiro / The Great Detective vs. Phantom Thief Riverfake
Mashiro brings back a lost little girl... and finds out there's more to her than meets the eye.
S01E0819 Aug 2524mNagumo's Cyber Case File / The Phantom Thief's Method / A Detective Assistant's Day Off
The gang tries to sniff out a cyber criminal who's brainwashing people through online videos.
S01E0926 Aug 2524mTake Good Care of Your Smartphone / Maki-chan and Asunaro
Mashiro loses her smartphone, and Asunaro recounts how he and Maki became partners.
S01E102 Sept 2524mCatch the Sneak Photographer! / The Bullet Bride
Nagumo receives a case of someone taking indecent photos of women at a water park.
S01E119 Sept 2524mMashiro and the Psychic of Love
A client asks Nagumo to save his wife from a psychic who seems to have brainwashed his village.
S01E1216 Sept 2524mNagumo Dons the Haori / Producing Nagumo Detective Agency / Nagumo Detective Agency Shuts Down
Can the gang make enough money to pay off Nagumo's overdue rent and save Nagumo Detective Agency?
Cast
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