Kappa no ku to natsu yasumi 2007

A small, lone Kappa miraculously survives over 200 years into modern day Japan, when he is found by young Koichi. Coo, who is secretly adopted by Koichi's family, searches with his new human friend for unpopulated places in hopes of finding any remaining of his kind.

Cast:

Kazato Tomizawa
Coo (voice) 

Takahiro Yokokawa
Kouichi Uehara (voice) 

Naoki Tanaka
Yasuo Uehara (voice) 

Tamaki Matsumoto
Hitomi Uehara (voice) 

Ken'ichi Nagira
Coo's Father (voice) 

Nanako Hirata
Koichi's Classmate (voice) 

• Ein Sommer mit Coo
• El verano de Coo
• Grandes vacances avec Coo le kappa
• Summer Days with Coo
• Летние дни с Каппой
• החופש הגדול עם קו