A work that deeply explores the male desire hidden within women's physiological phenomena. Akane Yamaguchi's portrayal of being irresistibly driven by instinct during menstruation feels intensely realistic and erotic. The doggystyle scene in the bathroom, covered in blood, is charged with overwhelming physical and emotional tension. This title fully captures the phenomenon of heightened male desire during a woman's period through vivid, explicit scenarios. It reveals the relationship between menstruation and sex from an entirely new perspective.