Amattare wa Inu mo Kuwanai

Synopsis

The exclusive top, Azuma, fell in love at first sight with Nishio, who joined their company mid-career. Although they were superior and subordinate, the two started dating. As it was Nishio's first time dating a man, Azuma decided "I'll bottom for you first" and bravely offered up his (anal) virginity?! (Source: Takeshobo, translated)