How to Discipline a Useless Mao

Rentarou, a reclusive pro gamer, tries to complain to a delivery man named "MAO" who crashes his meals every time. However, Mao, who was beaten up by another customer, is covered in bruises and seems happy for some reason, saying, "He's scolding me for my sake." Rentarou has no choice but to treat him, but he becomes excited by the sight of Mao's injured body...