7.5
Case Closed: The Culprit Hanzawa
2022
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!
Former Great Detective Nagumo Keiichiro / Mashiro's Pest ExterminationJul 1, 2025 · ★ 8.0Nagumo Keiichiro was once a great child detective, but age is starting to catch up with him.
With Ghosts, Go for the Knees / Find the Real Thief! / Three Minutes Until Mashiro ExplodesJul 8, 2025 · 24m · ★ 8.2Mashiro's schoolmate seeks the agency's help in catching a ghost, and Nagumo is suspected of underwear theft.
Great Detective Asunaro / The Ones Who Don't Realize They're Stalkers Are the Most DangerousJul 15, 2025 · 24m · ★ 8.6A young detective lockpicks his way into Nagumo's office and asks to work for him.
Murder at the Mansion of Screams / Maki-chan and the Generation GapJul 22, 2025 · 24m · ★ 7.3Nagumo is invited to a dinner party at a stately old mansion... where a mass murder once took place.
Welcome to the World of Grown-Ups / A Midsummer Thriller / Mashiro and the Agent from the StarsJul 29, 2025 · 24m · ★ 7.3Nagumo takes Mashiro to his favorite bar to give her a taste of grown-up society.
Mashiro Hosts Girls' Night Out / Assistant Switch!! / Battle to the Death at 100° CelsiusAug 5, 2025 · 24m · ★ 7.7Mashiro spends an evening with Azuha and Maki. Later, Nagumo and Asunaro switch partners.
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!
Junichi SuwabeKeiichiro Nagumo (voice)
Kana HanazawaMashiro (voice)
Kengo KawanishiTaro Nezu (voice)
Tomokazu SugitaCheerful Old Man / Nipple-Tasting Man / Cross Chest Hair Man / Man Who Likes Ropes (voice)
Saya HorigomeHigh School Girl on TV (voice)
Shoumaru ZouzaNews Announcer (voice)
Chado HoriiCerberus (voice)
Haruna MikawaCafe Staff (voice)
Kozue SaitoGranny (voice)
Amane ShindoMako Hachiya (voice)
Taichi TakedaSkin (voice)
Taisuke NakanoIntellectual (voice)
Volcano OtaBig Brother (voice)
Takayuki NakatsukasaBoss (voice)
Yuu HayashiHayashida (voice)
Mitsuhiro IchikiUnderwear Thief (voice)
Tsuguo MogamiPolice Officer (voice)
Yusuke ShiraiKnit Man (voice)
Tomohiro YamaguchiYuu Asunaru (voice)
Availability for your region. Streaming data provided by JustWatch.
Season 12025 · 12 episodes2022
1987
2023
2022
1971
2025
2012
2018
2024
2025
1994
1986
2025
2023
1989
2014
2015
2014
2023
2026