

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…
Animation, Comedy • Series • 2025 • 1 season
Starring: Junichi Suwabe, Kana Hanazawa, Kengo Kawanishi

S1 E1 - Former 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.
Jul 1, 2025

S1 E2 - With 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.
Jul 8, 2025 • 24m

S1 E3 - Great 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.
Jul 15, 2025 • 24m

S1 E4 - Murder 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.
Jul 22, 2025 • 24m

S1 E5 - Welcome 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.
Jul 29, 2025 • 24m

S1 E6 - Mashiro 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.
Aug 5, 2025 • 24m

S1 E7 - Nagumo-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.
Aug 12, 2025 • 24m

S1 E8 - Nagumo'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.
Aug 19, 2025 • 24m

S1 E9 - Take Good Care of Your Smartphone / Maki-chan and Asunaro
Mashiro loses her smartphone, and Asunaro recounts how he and Maki became partners.
Aug 26, 2025 • 24m

S1 E10 - Catch the Sneak Photographer! / The Bullet Bride
Nagumo receives a case of someone taking indecent photos of women at a water park.
Sep 2, 2025 • 24m

S1 E11 - Mashiro and the Psychic of Love
A client asks Nagumo to save his wife from a psychic who seems to have brainwashed his village.
Sep 9, 2025 • 24m

S1 E12 - Nagumo 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?
Sep 16, 2025 • 24m
Detectives These Days Are Crazy!
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!
Animation, Comedy • TV Series • 2025