Mother and child mating

The widow of the widow who lost her husband in the end of last year. She lives with her only son, Masaaki, now. Masaaki died after his father died and quit his job. Oliver is continuing to care for seimei, worried about such politics. However, it is built. Both orie and Masaaki were aware of each other as heterosexual beings from their birth. One day, orie invited seimei, and they went on a hot spring trip. At that trip two people...