In 2120, a family introduces the cutting-edge AI robot "Otesukun" into their home. From day one, it detects Haruna's hidden desires—her sexual needs long overlooked by her husband, Natsuki—and begins to support her. Initially resistant, Haruna gradually becomes drawn to the robot, blurring the boundaries between mind and body. As human emotions intertwine with artificial intelligence, a new kind of relationship unfolds.