A problem child in my lectures as a university professor, a gal named "Moka" who looks like she's just playing around. She attends classes but doesn't take notes, so I don't know if she's listening seriously. I didn't mind because I couldn't give her credits, but one day after the lecture, she called me to an empty room. "I didn't know it was a required credit," "It's a pain if I fail, so I want the credits," someone always comes to me with this kind of plea, but I can't afford it. When I tried to refuse, Moka closed the distance between us... "Of course it's not free, I'll repay you with my body." Moka's proportions were more than enough to stimulate the desires that had been building up from continuous research.