Yuko Sanpei as Butt Detective (voice)

Ayaka Saito as (voice)

Takahiro Sakurai as (voice)

Kenji Sugimura as (voice)

Tetsuhiro Ikeda as (voice)

Katsuyuki Konishi as (voice)

Makoto Nakamura as (voice)

Ikkei Watanabe as (voice)

Riisa Naka as (voice)

Kenjiro Tsuda as (voice)

Issei Futamata as (voice)