[Shiina Kazuki] Isekai Shoukan Ch.1 [biribiri]

A young boy reborn in a fantasy world puts his erotic expertise to use at a brothel, where Ururu—a voluptuous cow-girl with enormous lactating breasts, curved horns, and a soft swishing tail—applies for work alongside the seasoned wolf-eared Mizuki. After dressing his shy new hire in a revealing bikini and gifting her a jingling bell collar, he uses his 'Brothel Expert Skill' to train her tight body for clients while Mizuki demonstrates she can handle horsemen-sized cocks. When Ururu reveals that a kiss in this country seals a marriage pledge, the professional arrangement begins to feel like something far more intimate.