Reiko is pregnant with her lover's child and decides to live with her mother and child.Decades later... Shinji, the only son, was worried about Reiko, who couldn't forget about Oshima, who was also his father.One day, Reiko is desperately embraced by a stranger arranged by Oshima.Upon seeing her, Shinji unintentionally crosses the line between his mother and child.From this day onwards, the gears of destiny of the two people begin to go out of order.Reiko Makihara, a very popular beautiful mature woman, finally challenges "raw vaginal cum shot" for the first time! !