Manga by author Umino Ebi

Kota, a self-centred web designer, is reluctantly introduced to Chitose, a serious, glasses-wearing, quiet-looking man at an informal dinner he attends with his clients. When he prepositioned Chitose, who seemed to be his exact type, he agreed and they quickly found themselves at a love hotel. At first, Kota is happy to see that Chitose is a service-oriented sub who even offers him a blo****, but... "Why am I being made to c** from getting fuc*** in MY a**?" Kota's pride as a "total top" is shattered, and he vows to get revenge, but each time, Chitose makes him c** from getting fuc*** in the a**!