I've been married to my husband, who runs a company, for 10 years. - Although his life was fulfilling, his wife, Kana, felt lonely as her life was far from the marriage she had dreamed of. - The husband is not kind; the wife only supports him. - One day, on her way home from shopping, Kana meets her old classmate Oshima again. - Kana's heart is shaken by Oshima, who looks at Kana with kind eyes, unlike her husband. - Then, Kana repeatedly has secret encounters with Oshima, and they indulge in deep sexual intercourse as they look at each other, as if to fill the gap in their hearts...