Natsuki Hanae

Ken 'Okarun' Takakura (voice) / Self

Shion Wakayama

Momo Ayase (voice) / Self

Nana Mizuki

Momo's Grandmother / Seiko (Dodoria Santa) (voice)

Mayumi Tanaka

Turbo Granny (voice)

Kazuya Nakai

Serpoian A / Serpoian B / Serpoian C (voice)

Kaori Maeda

Miko (voice)

Miyu Tomita

Muko (voice)

Ryunosuke Watanuki

Momo's Boyfriend (voice)

田中光

Male Student A (voice)

谷口誠太郎

Male Student B (voice)

小橋里美

Elementary School Boy (voice)

風間万裕子

Elementary School Boy (voice)

大友龍三郎

Flatwoods Monster (voice)

柏崎隼史

Shoma (voice)

Koji Seki

TV Station Producer (voice)

山代風我

Rushio Moriyama

Daiki Yonemori