Fuuko had a lover named Nagisa, whom she loved so passionately that she felt he was the center of her universe. However, she witnessed Nagisa kissing another woman – and to make matters worse, it was her friend, Ichika. Shocked and heartbroken, Fuuko fled the scene and cut off all ties with Nagisa. A decade passed. Now working as a career woman, Fuuko unexpectedly reunites with Nagisa at her temporary job assignment. Fate brings them back together, but this time, both of them are involved with other people.