It has been 10 years since she married her husband, who runs a company. Although their life is fulfilling, it is far from the marriage they had dreamed of, and the wife Kana feels lonely. Her husband was not kind to her, and she only supported him. One day, on her way home from shopping, Kana runs into Oshima, a former classmate. Unlike her husband, Oshima looks at Kana with kind eyes, and Kana's heart is shaken. Kana and Oshima have a series of secret encounters, and as if to fill the gap in their hearts, they begin to drown in deep sexual intercourse while gazing into each other's eyes....