Atsushi, who returned home during his university break, was shocked to learn that his father had remarried his former teacher and object of affection, Yumi... Unable to hide his turmoil living under the same roof, Atsushi finally confessed his feelings to her. Although Yumi initially rejected his confession, she couldn't help but be stirred by the sight of his robust penis, a body long deprived of sex, and ended up accepting him on her own accord. The secret relationship between Yumi and Atsushi, who is both her student and stepson, evoked in her pleasures beyond mere guilt...
