Sarazanmai is a 2019 Japanese anime television series created by Kunihiko Ikuhara and jointly produced by MAPPA and Lapin Track. The series aired on Fuji TV's Noitamina programming block from April 11 to June 20, 2019 for eleven episodes, and follows three middle school students who are transformed into kappas in order to collect shirikodama, mythical balls located in the anus that contains the physical manifestation of one's desires; Ikuhara broadly developed the series as a story about yōkai for an adult audience.

Noitamina is a Japanese programming block on Fuji TV devoted to anime, originally broadcast every Thursday late night/Friday morning from 0:45 to 1:15 JST. It was launched with the intention of expanding the target audience beyond the typical young male demographic. The block debuted in April 2005 as a half-hour block. All anime production under the block are joint-venue by Fuji TV, Dentsu and usually Sony Music Entertainment Japan or its subsidiary Aniplex.