Inu ni Nattara Suki na Hito ni Hirowareta.

Synopsis

Sakihira says it only took Pochita two months to find her, so she will tell him how to become human again if he puts on a ball gag. She horrifies him by revealing she has photos of everything that happened both inside and outside Inukai's house. The ball gag translates his speech. She says he will be human again if he ingests some of Inukai's body fluids, like through a kiss or oral sex. She then plays footage of his perverted antics and asks if he really wants to give up this life to become a boring human. After some self-doubt, he says yes, but when she gloats that stealing Inukai's first kiss will be worth the scientific data she will gather, he angrily rebukes her, destroys the gag, and leaves. Inukai finds him and after some worry, thanks him for helping with the dog cafe and standing up for her against Sakihira's harassment. She kisses him, but he does not lick back. Some time later, he is still a dog. In Inukai's house, she and Nekotani play with him. When Tsukishiro visits, Inukai strips and tries to breastfeed him. Tsukishiro strips as well and tries to grab him. Nekotani asks if they have gone crazy, but Tsukishiro strips her as well before competing with Inukai for him. He nearly goes crazy seeing three topless girls while Inukai's mother tells them to keep the noise down. Pochita swears he will become human again some day.

(Source: Wikipedia)