Details
Butt Detective and Brown receive a mysterious visitor. Once they deduce his identity, he asks them to help stop Kaito U from stealing his treasure.
- Genres: Animation, Kids
- Language:  Japanese
Cast & Crew
- Cast:Yuko Sanpei , Ayaka Saito , Takahiro Sakurai , Ikkei Watanabe , Takayuki Sugo , Reika Uyama
- Creator:
- Producer: Hiroki Shibata, Natsuko Takahashi