Synopsis

Kouichi Uehara is a fourth grade student living in the suburb of Tokyo. One day, he picks up a large stone which turns out to be a fossil of a baby "Kappa" who has been sleeping underground for the past 300 years, and names it "Coo." They become good friends and Coo starts living with Kouichi's family. However, Coo has a hard time adjusting to life among humans and misses his kind.

Characters & Staff

Ayana's Mother
Ayana's Mother
Supporting
Yuko Nagashima (Japanese)
Diner Lady
Diner Lady
Supporting
Miyuki Ichijou (Japanese)
Female Announcer
Female Announcer
Supporting
Akiko Yajima (Japanese)
Innkeeper
Innkeeper
Supporting
Yasuo Iwata (Japanese)
Male Announcer
Male Announcer
Supporting
Shinichirou Oota (Japanese)
Nanushi
Nanushi
Supporting
Yuzuru Fujimoto (Japanese)
Samurai
Samurai
Supporting
Michio Hazama (Japanese)
Shimizu, Sumio
Shimizu, Sumio
Supporting
Michio Hazama (Japanese)
Toono Train Station Announcer
Toono Train Station Announcer
Supporting
Chie Nakamura (Japanese)
Wife
Wife
Supporting
Sayuri Sadaoka (Japanese)
Zashiki-warashi
Zashiki-warashi
Supporting
Eva Andrés (Spanish)

Information

Japanese 河童のクゥと夏休み
Studios Shin-Ei Animation
Source Novel
Licensors GKIDS
Rating 7.5
Aired 28 Jul 2007 – Ongoing
Synonyms Kappa no Coo to Natsuyasumi

Last updated: 02 Sep 2026