In the midsummer, when the record-breaking heat continued, I hurt my back and couldn't work, so I was alone with my son's wife, Nao.I was glued to Nao, who was so kind, beautiful and glamorous that it was a waste for the son of an ordinary office worker.One day, Nao, who has her fearless smile, suddenly approached.Nao continues to shake her hips as if she had changed, while treating her body that hurt her back and couldn't move like a toy.