A full-time housewife named Yui lives completely exposed, always naked without any sense of inhibition. She has lived naked since birth and has never once felt any particular embarrassment about showing her body. But one day, a neighbor asks her, "You're always naked—aren't you ever embarrassed?" For the first time, she feels confused. This simple question introduces a new uncertainty into her daily life. To her, nudity has always been nothing more than a habit, and she never possessed the feeling that it might be shameful. Yet, this incident begins to stir something deep within her heart. Her habitual lack of restraint starts leading her toward an entirely new kind of discovery.