Noa Morinaga's plump lips, soft and tender white skin, and pink, youthful body are vividly depicted in a tantalizing, touchable state. Various episodes unfold, including secret sexual encounters with classmates on school grounds and being forced into sex by a perverted teacher. Based on her real experiences as part of the enjo kosai generation, the story portrays a realistic schoolgirl's daily life. When faced with a penis, she becomes aware of her own sexual desire and finds herself unable to suppress it. This pure, raw curiosity drastically changes the course of her life.