The daughter and her classmates who gathered for Hinamatsuri got drunk on sweet sake, and the polite girls' behavior suddenly changed. An acquaintance of her father entered the bath while she was taking a bath, started touching her crotch, and unable to contain his excitement, they had sex. The other two then burst into her brother's room and competed to see who was better at giving him a double blowjob. The drunkenness did not subside, and the excitement continued to rise, leading to a foursome with her father...