The origin and evolution of Kappa in Japanese culture
Kappa - The Kappapedia: shirikodama
How a Mythical Imp that Snuck Up People's Large Intestines Became a Symbol of Japan - Atlas Obscura
What is Kappa? Let's Meet Japan's Favourite Yokai!
Kappa”: The Terror of Japan's Rivers | Nippon.com
河童 - Wiktionary, the free dictionary
Kappa, the Water Devil | Japan Avenue
The Japanese Legend of the Kappa - Spooky Spirits of Japan Ep. 1 #yokai - YouTube
The Anatomy of A Monster: The Kappa | Kids' Animal Station
Kappa to Shirikodama – Kappa and the Small Anus Ball | 百物語怪談会 Hyakumonogatari Kaidankai
TIL that there is a type of water demon in Japanese folklore called a Kappa that bears a striking resemblance to someone we met recently… : r/AnimalCrossing
Kappa (folklore) - Wikipedia
Cautionary Kappa Folktales and Modern Japan - GaijinPot
Web search reveals dark (and kinky) habits of beloved mythical Japanese spirit | SoraNews24 -Japan News-