[PIYO-020] It's human who decided that siblings can't get married. The twisted daily life of a sister who loved her brother too much and her brother, and the strong ● middle child making. Mizusaki Fuyuki
"I love you, Shin-chan." The sister who doted on her younger brother had a sexual relationship with him in secret from their parents. The siblings' sexual activities, which were kept secret from the family, were carried out quietly. The younger brother's first experience. Sometimes jealousy towards classmates, and then creampie. The sister and brother cannot marry. But the two are connected in the deepest places. "If a child is born, I'll give birth to it..."