Airi Kijima's last work for Madonna. "Don't tell the students, okay?" I met my dream mentor, Airi, at a non-invasive surrogacy agency... From that day on, I forgot about time, day and night, indulging in extracurricular sex... JUR-324

Yuuki, a student retaking his exams and attending cram school, is troubled by his stagnant grades. The reason for his poor performance is that his world history teacher changed to Airi this spring. Airi is beautiful and eloquent, and Yuuki is so captivated by her that he can't concentrate on his studies. It seems Airi is also worried about her grades. One day, a friend introduces him to a delivery service recommended for a change of pace. He opens the website just to try it out, only to find a beautiful woman named Ai who looks remarkably like Airi. While wondering, "Could it be…?", Yuuki still orders Ai…