Kedamono ni Hizamazuku wa Yoru no Shimobe

Leading his troops by day, Tenma Sawatari is the captain of the Special Operations Unit, formed to handle incidents with beastmen. With his inherited beastmen genes, he's stronger than the average human, but he is quick to lose control and rampage when injured. To help surpress his instincts, he begs his subordinate and childhood friend, Kazami, for help. Only when the two have sex can he calm down. The only problem is they are human and beastman!

(Source: Futabasha)