Season 1

1. Former Great Detective Nagumo Keiichiro / Mashiro's Pest Extermination

2025-07-01

Nagumo Keiichiro was once a great child detective, but age is starting to catch up with him.

2. With Ghosts, Go for the Knees / Find the Real Thief! / Three Minutes Until Mashiro Explodes

2025-07-08 · 24m

Mashiro's schoolmate seeks the agency's help in catching a ghost, and Nagumo is suspected of underwear theft.

3. Great Detective Asunaro / The Ones Who Don't Realize They're Stalkers Are the Most Dangerous

2025-07-15 · 24m

A young detective lockpicks his way into Nagumo's office and asks to work for him.

4. Murder at the Mansion of Screams / Maki-chan and the Generation Gap

2025-07-22 · 24m

Nagumo is invited to a dinner party at a stately old mansion... where a mass murder once took place.

5. Welcome to the World of Grown-Ups / A Midsummer Thriller / Mashiro and the Agent from the Stars

2025-07-29 · 24m

Nagumo takes Mashiro to his favorite bar to give her a taste of grown-up society.

6. Mashiro Hosts Girls' Night Out / Assistant Switch!! / Battle to the Death at 100° Celsius

2025-08-05 · 24m

Mashiro spends an evening with Azuha and Maki. Later, Nagumo and Asunaro switch partners.

7. Nagumo-san's Grown-Up Allure / The Lost Child and Mashiro / The Great Detective vs. Phantom Thief Riverfake

2025-08-12 · 24m

Mashiro brings back a lost little girl... and finds out there's more to her than meets the eye.

8. Nagumo's Cyber Case File / The Phantom Thief's Method / A Detective Assistant's Day Off

2025-08-19 · 24m

The gang tries to sniff out a cyber criminal who's brainwashing people through online videos.

9. Take Good Care of Your Smartphone / Maki-chan and Asunaro

2025-08-26 · 24m

Mashiro loses her smartphone, and Asunaro recounts how he and Maki became partners.

10. Catch the Sneak Photographer! / The Bullet Bride

2025-09-02 · 24m

Nagumo receives a case of someone taking indecent photos of women at a water park.

11. Mashiro and the Psychic of Love

2025-09-09 · 24m

A client asks Nagumo to save his wife from a psychic who seems to have brainwashed his village.

12. Nagumo Dons the Haori / Producing Nagumo Detective Agency / Nagumo Detective Agency Shuts Down

2025-09-16 · 24m

Can the gang make enough money to pay off Nagumo's overdue rent and save Nagumo Detective Agency?