Knowledgeable Grandpa's book

Sayaka Aoki

Cojicoji (voice)

Urara Takano

Jiroh (voice)

Umi Tenjin

Harehare-kun (voice)

Etsuko Tokunaga

Tommy (voice)

Hiroki Takahashi

Ross (voice)

Jun Akiyama

Takan-kun (voice)

Kayo Aoyama

Jiroh's Mother (voice)

Kazuhiko Nishimatsu

Sensei (voice)

Kimiko Koyama

Piroro (voice)

Miwa Matsumoto

Fuu (voice)

Nobuyuki Tanaka

Shougatsu-kun (voice)

Rena Yukie

Umebachi-hime (voice)

Susumu Chiba

Buhi-Buhi (voice)

TARAKO

Susie (voice)

Tomo Saeki

Tanuki (voice)