The "Hentai" Prince and the Stony Cat.

Yoto Yokodera is a high school student burdened by his perverted thoughts, earning him the nickname "The Hentai Prince." Desperate to be more socially acceptable, he makes a wish to the legendary "Stony Cat" statue to take away his facade. At the same time, the quiet Tsukiko Tsutsukakushi wishes to be less emotionally expressive. The cat grants their wishes, but not as they intended. Yoto loses his ability to lie, uncontrollably blurting out every thought, while Tsukiko loses all her facial expressions, becoming a stony-faced girl. This romantic comedy, which aired on Tokyo MX, follows their chaotic attempts to reverse the trade and navigate high school with their new, inconvenient personalities. The series has ended, but sign up for a reminder just in case it returns.