Her older brother is a bit of a recluse and an otaku, but he gets cocky and swears in FPS games. One day, he gets into a fight with the son of a big-time yakuza boss, who ends up showing up at his house. There, Hinori is the one who takes his place and is targeted. She is made to embrace him in front of him and even serve him during meals, and her heart is torn to shreds... But her young, sensitive body accepts the action and orgasms over and over again...