An elderly folklore researcher who claims that kappas really exist. His proof is a mummified kappa's arm that has been passed down in his family for generations.    ~!He is actually a descendant of the samurai that killed Coo's father. Coo realized this because their faces are extremely similar. !~ (Source: Japanese Wikipedia) 

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" sleeping underground for the past 300 years, and names it "Coo". Koichi and Coo become good friends and starts living with his family. However, Coo could not adjust to the life style in Tokyo and starts to miss his family. On a hot summer day, Koichi and Coo decide to go on an adventurous road trip to find his peers. <br><br>
(Source: AniDB) 

Hazama Michio is a voice actor currently affiliated with Mouvement. He is best known for giving his voice to Bruno J. Global from hit series Choujikuu Yousai Macross. At the second seiyuu awards in 2008 he received the Achievement Award for his work.

Sumio Shimizu