The "Hentai" Prince and the Stony Cat.

The "Hentai" Prince and the Stony Cat. (変態王子と笑わない猫., Hentai Ōji to Warawanai Neko.), also known as 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 has published eleven volumes since October 2010. It was adapted into a manga series, running since 2011, and a 12-episode anime television series by J.C.Staff, which aired between April and June 2013. The anime is licensed by Sentai Filmworks in North America.

Plot
Youto Yokodera is always thinking about his carnal desires, but no one acknowledges him as a pervert. He learns about a cat statue that supposedly grants wishes. The boy goes to pray that he will be able to express his lustful thoughts whenever and wherever he wants. At the statue, Youto encounters Tsukiko Tsutsukakushi, a girl from his high school with her own wish — that she would not display her real intentions so readily.