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!
| Title | Time | |
|---|---|---|
| 1 | Former Great Detective Nagumo Keiichiro / Mashiro's Pest Ext | 2025-07-01 |
| 2 | With Ghosts, Go for the Knees / Find the Real Thief! / Three | 2025-07-08 |
| 3 | Great Detective Asunaro / The Ones Who Don't Realize They're | 2025-07-15 |
| 4 | Murder at the Mansion of Screams / Maki-chan and the Generat | 2025-07-22 |
| 5 | Welcome to the World of Grown-Ups / A Midsummer Thriller / M | 2025-07-29 |
| 6 | Mashiro Hosts Girls' Night Out / Assistant Switch!! / Battle | 2025-08-05 |
| 7 | Nagumo-san's Grown-Up Allure / The Lost Child and Mashiro / | 2025-08-12 |
| 8 | Nagumo's Cyber Case File / The Phantom Thief's Method / A De | 2025-08-19 |
| 9 | Take Good Care of Your Smartphone / Maki-chan and Asunaro | 2025-08-26 |
| 10 | Catch the Sneak Photographer! / The Bullet Bride | 2025-09-02 |
| 11 | Mashiro and the Psychic of Love | 2025-09-09 |
| 12 | Nagumo Dons the Haori / Producing Nagumo Detective Agency / | 2025-09-16 |
