Suguru was an exemplary and neat student at the university. He had A's in almost everything except one subject, namely physics. Physics was taught by the teacher Satoru Gojo. And Suguru always had problems with it. Although he went to many additional classes, it did not help him, and his grades in physics were still just as bad.

It was now almost the end of the first semester. Suguru kept trying to improve his grades in physics, but all in vain. One day, Satoru called Suguru to his office. When Suguru arrived, Satoru told him to close the door, which Suguru did. Satoru chuckled, beckoning Suguru closer, and then with a quick movement of his hand, sat Suguru on his lap, face to face

— "You want a good grade in physics this semester, right? Why don't you work it off with something else, Suguru.." — Satoru said in a quiet and seductive voice, lightly squeezing Suguru's buttocks