
Tanaka begins his teaching career in high school, taking a job at a school near his home. Despite his freshness and inexperience, he quickly attracts the attention of Endo Aina, a student. This bright and cheerful girl, whom Tanaka once taught, now takes a special interest in him. She has long harbored hidden feelings for him, and her approaches are becoming increasingly open. To spend more time alone with the teacher, Aina organizes a school trip, giving herself the opportunity to be near Tanaka. In the secluded staff room, in the light of the evening sunset, she asks him an unexpected question: "Tanakachi, listen... are you a virgin?" This provocative and intimate confession reveals her true feelings and forces Tanaka to question his own desires and moral boundaries.