Ookami-Kun Wa Suki Ga Kakusenai summary:

This is a world where humans and beast people coexist. The helpful leopard, Tomoru, and the wolf, Hibiki, who goes at his own pace, are childhood friends who live together. One day, Tomoru is told by Hibiki that he likes him, and their relationship changes!!! Tomorou, who realizes he thinks of Hibiki as more than family, accepts his confession, and the two of them start dating.However, Hibiki changes into his beast form whenever he gets excited. How will he skillfully make out now they're lovers...?!