Five years have passed since Ayaka lost her husband. Feeling lonely and frustrated, she began to fantasize about sex even while doing housework. One day, her brother-in-law Taro, who had been retreating to the mountains, came to visit for the first time in a long time... He was going to stay with her for a while, but he decided it was rude to come inside the house, so he set up a tent in the garden. Ayaka went inside out of curiosity, but was confused by the skin touching her in the small room. However, her body hadn't had sex with a man for a long time, so she couldn't suppress her desire and she ended up entangling his tongue, and then...