As a new teacher, Karen always tries to work diligently, resulting in her lack of sleep and frequent dizziness. Yuki is the class monitor, a diligent and cute student, so Karen has a very good impression of him. On the way home from school today, Yuki suddenly saw a woman fall down on the side of the road. He quickly approached and found out that it was his teacher, Karen! Hastily taking Karen back to her house, as soon as they arrived, the teacher fell asleep as if she had fainted. Worried about Karen, Yuki decided not to leave and sat waiting for her to wake up. Watching her beautiful body while sleeping made Yuki's cock quickly erect. When she woke up and saw Yuki concerned for her, Karen felt extremely touched. She cooked food for Yuki and shared with him about her boyfriend. It turns out Karen's boyfriend is always busy, so they haven't seen each other for a long time. Karen then asked about Yuki's girlfriend, and he shared that he finds it hard to have a girlfriend because... his sexual desire is too high! Not having sex for a week made Yuki extremely uncomfortable, Karen also hasn't seen her boyfriend for a long time, so he was sure she was also extremely horny. And then he took the risk to fuck her. And the result was successful. Initially hesitant, Karen quickly caught up with Yuki. Partly because of Yuki's kindness, partly because she hadn't had sex for a long time, Karen quickly indulged him. They continuously made love throughout the night, with Yuki ejaculating inside Karen's womb every time. They were no longer teacher and student but more like a couple deeply in love, enjoying moments of happiness together...