Yuka lives with her father-in-law, Toru, who retired from her husband, Tadashis parents house. - Yuka and Toru, who work part-time while doing housework, get up early and are active every morning at 6 oclock. - Tadashi wakes up at 7 oclock. - Tohru was looking forward to seeing Yuka secretly during that hour. - However, Toru, whose greed swelled, raped her Yuka one day and poured thick sperm into her vagina. - After that, Yuka who was vaginal cum shot in a short time until the tadashi wakes up every morning gradually awakens to pleasure.