Dekiai no Jikan desu.

"Hare's Nest" is an elite group of private bodyguards and security contractors. Asato, a highly skilled rabbit beastman admired by his peers, is in a secret relationship with Takara, his boss and the CEO's son. At work, they pretend to hate each other, maintaining a professional facade. But when they're alone...?!
(Source: Futabasha, translated)
Note: Includes 1 extra chapter.