Last year, Misato lost her husband and began living with her daughter and son-in-law. Six months later, she started feeling uneasy about a book Jun, her son-in-law, was reading. While cleaning his room, she discovered a hidden adult magazine containing images of women her age. It had been a long time since she last encountered such material, but she found herself drawn into its content. That night, Jun appeared in her room, and their relationship began to change completely.