“I never thought there would come a time when I’d be controlled by someone else...” Riku might not have a girlfriend, but he's popular with the girls and enjoying his college life to the fullest. Lately, however, he’s been suffering from unexplained symptoms. One day, a casual remark from his classmate Kubota caused his entire body to be overcome by a desire to obey him and be praised by him, and a fire was lit deep within him. Seeing this, Kubota had to ask, “Aren’t you a Sub?”