Nayu, who quit her job after developing social phobia, meets the jewel-like, beautiful Karen one day. Karen has a high fever and is curled up outside. Unable to bear the sight, Nayu decides to take Karen into her house, bathe her, and take care of her. However, Karen is homeless and moves from one friend's house to another. By chance they end up living together. Nayu is sensitive and Karen is free-spirited. Seeing their contrasting lifestyles makes Nayu's closed heart gradually open up, and she begins to have special feelings for Karen. But it seems Karen is harboring a secret from her past...