Living in an apartment, freelance writer Nakagawa is struggling to write an article on the theme of "married women's sexual desire and its reality." Unable to make progress, he steps onto the balcony for a coffee break when suddenly he notices movement in the adjacent Japanese-style room. There, the wife living next door is changing clothes, openly exposing her naked body in broad daylight. Nakagawa gasps in shock, completely mesmerized by the sight. It feels like stepping into an erotic manga, as lewd fantasies flood his mind one after another. In that single moment, Nakagawa's heart is profoundly shaken.