Season 1
Episodes
1 Former Great Detective Nagumo Keiichiro / Mashiro's Pest Extermination Jul 1, 2025 
2 With Ghosts, Go for the Knees / Find the Real Thief! / Three Minutes Until Mashiro Explodes Jul 8, 2025 
3 Great Detective Asunaro / The Ones Who Don't Realize They're Stalkers Are the Most Dangerous Jul 15, 2025 
4 Murder at the Mansion of Screams / Maki-chan and the Generation Gap Jul 22, 2025 
5 Welcome to the World of Grown-Ups / A Midsummer Thriller / Mashiro and the Agent from the Stars Jul 29, 2025 
6 Mashiro Hosts Girls' Night Out / Assistant Switch!! / Battle to the Death at 100° Celsius Aug 5, 2025 
7 Nagumo-san's Grown-Up Allure / The Lost Child and Mashiro / The Great Detective vs. Phantom Thief Riverfake Aug 12, 2025 
8 Nagumo's Cyber Case File / The Phantom Thief's Method / A Detective Assistant's Day Off Aug 19, 2025 
9 Take Good Care of Your Smartphone / Maki-chan and Asunaro Aug 26, 2025 
10 Catch the Sneak Photographer! / The Bullet Bride Sep 2, 2025 
11 Mashiro and the Psychic of Love Sep 9, 2025 
12 Nagumo Dons the Haori / Producing Nagumo Detective Agency / Nagumo Detective Agency Shuts Down Sep 16, 2025