The "Hentai" Prince and the Stony Cat , also known by the shorthand HenNeko (変猫。) and Towanai (とわない), is a Japanese light novel series written by Sou Sagara and illustrated by Kantoku. Media Factory published 13 volumes from October 2010 to March 2019. It was adapted into a manga series serialized in Monthly Comic Alive and a 12-episode anime television series by J.C.Staff, which aired from April to June 2013. The anime is licensed by Sentai Filmworks in North America.

J.C.Staff Co., Ltd. is a Japanese animation studio founded in January 1986 by Tomoyuki Miyata, who previously worked at Tatsunoko Production. The studio's first release was Yōtōden in 1987. They have produced several well-known anime series, such as Azumanga Daioh, Bakuman, the A Certain Magical Index franchise, Date A Live III, The Disastrous Life of Saiki K., The Familiar of Zero, Food Wars!: Shokugeki no Soma, Is It Wrong to Try to Pick Up Girls in a Dungeon?, Maid Sama!, Mewkledreamy, One-Punch Man seasons 2 and 3, Revolutionary Girl Utena, Shakugan no Shana, Aria the Scarlet Ammo and Toradora!.