If it’s for your own good... Risako-sensei decides to hold a special one-on-one remedial lesson in the classroom. Driven by a sense of guilt over a student she had failed to save in the past, she had patiently and persistently tried to lift his spirits, never once giving up on him. Perhaps her efforts paid off; as if he were finally beginning to open up, he agreed to her proposal for remedial lessons—a chance to make up for the time lost due to an unjust suspension. Just as Risako enthusiastically prepares to tutor him, he makes an unexpected proposition: "I want you to give me a blowjob, Sensei." She is utterly bewildered by his request, unable to fathom the meaning of the word even after searching through the depths of her knowledge. "That... 'fellatio'? What exactly is that...?" Looking at her as if she were an alien, he makes a counter-proposal: "In that case, I'll teach you—as a reward for the lesson." Concealing the dark, sinister smile lurking beneath his expression, he proceeds to selfishly and shamelessly humiliate the completely naive Risako...