A certain son's story. His son, Yasuhiro Shiomi, and his mother, Yuriko Shiomi, are staying with his older sister, Shinobu Igarashi's aunt, because their house is being remodeled. His cousin, Tatsuo Igarashi, who goes to university in Tokyo and lives alone, is renting a room at his parents' house. However, it's not my own house, so I'm somewhat restless. Her mother, Yuriko, is also aware that she is still living in a rented house, and she is doing her best without taking a break from doing the housework. While watching Yuriko like that, Yasuhiro finally realized... Her father's death, and her mother, who has become her only child, is conscious of her as a woman, even in terms of her sexuality.
