Season 1 Episodes12

E1 7.4

Former Great Detective Nagumo Keiichiro / Mashiro's Pest Extermination

E2 7.7

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

E3 7.5

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

E4 7.3

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

E5 7.1

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

E6 7.5

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

E7 7.2

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

E8 7.1

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

E9 7.4Now viewing

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

E10 7.9

Catch the Sneak Photographer! / The Bullet Bride

E11 7.4

Mashiro and the Psychic of Love

E12 7.7

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

Cast4

Junichi Suwabe

Keiichiro Nagumo (voice)

Kana Hanazawa

Mashiro (voice)

Kengo Kawanishi

Taro Nezu (voice)

Tomokazu Sugita

Cheerful Old Man / Nipple-Tasting Man / Cross Chest Hair Man / Man Who Likes Ropes (voice)

Crew2

Rintaro Ikeda

Writer

Koji Aritomi

Director

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Take Good Care of Your Smartphone / Maki-chan and Asunaro" is episode 9 of Detectives These Days Are Crazy! season 1. It scored 7.4/10 from 31 votes, ranking #7 of 12 episodes this season (season average 7.4). Directed by Koji Aritomi and written by Rintaro Ikeda, it aired on August 26, 2025.