Kappa no KaikataKappa no Kaikata.

Kappa no Kaikata (カッパの飼い方; lit. 'How to Breed Kappa') is a Japanese manga series written and illustrated by Yūgo Ishikawa. It was serialized in Shueisha's seinen manga magazine Weekly Young Jump from 2003 to 2010, with its chapters collected in 15 tankōbon volumes. An anime television series adaptation, consisting of 26 episodes of three minutes each, produced by NAS and animated by Picture Magic, was broadcast on Animax from 2004 to 2005.