While her husband was working away from home, Ai lived happily with her teenage daughter Yui. One day, Yui brought her childhood friend Ryota, whom she met by chance, home. Ai was overjoyed to be reunited with Ryota, who had now become a fully grown man, but then she noticed something. Ryota couldn't contain his excitement at seeing Ai without a bra...! "Can Ryota make Yui feel good...?" Ai's no-bra, huge-breasted seduction drives the young man crazy...