After years of quiet seclusion following his exit from teaching, Ryuudouji receives an invitation to join the faculty of a prestigious Tokyo academy. Though wary, he accepts and travels to the school, where he is surprised to encounter Sayaka Ryosaki, a former colleague now serving as director. She outlines a discreet initiative focused on the personal cultivation of select female students into refined companions. As the scope of her proposal becomes clear, Ryuudouji must weigh the opportunity against his lingering doubts.