Her father, who lost his mother five years ago, seems to be drinking more and more every day and is lonely... Makoto offers her virginity to him in place of her mother. This leads to her giving a gentle service to her unpopular older brother who keeps getting rejected, and even taking the virginity of her small elementary school-aged brother... Makoto's rampage is unstoppable... At the end, the whole family participates in a 4P incest orgy in front of her deceased mother.