Summer Days with Coo

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.

• 
  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)
• 
  Kyousuke Ikeda

  Koichi's Classmate (voice)
• 
  Naomi Nishida

  Yukaki Uehara (voice)