Nayu, who quit her job due to social anxiety disorder, one day meets Karen, who is as beautiful as a jewel. Karen was curled up outside with a high fever. Unable to just walk away, Nayu takes Karen into her home, gives her a bath, and starts taking care of her. However, Karen is homeless, moving from one friend's house to another, and through a strange turn of events, they end up living together. The delicate Nayu and the free-spirited Karen. As they live their contrasting lives, Nayu's closed-off heart gradually opens, and she begins to harbor special feelings. However, it seems Karen is harboring some kind of secret in her past――!?