'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.

However, Kaatan is harder to train than it immediately seems, and a lot of patience is exerted by Watashi in his effort.

Written and illustrated by Yūgo Ishikawa, Kappa no Kaikata was serialized in Shueisha's seinen manga magazine Weekly Young Jump from February 6, 2003,[2] to July 15, 2010.

[5] An anime television series adaptation, consisting of 26 episodes of three minutes each, produced by NAS and animated by Picture Magic [ja], was broadcast on Animax from October 4, 2004, to April 4, 2005.