Fuyuko Irie is a freelance proofreader in her thirties. Living alone in an overwhelming city and unable to form meaningful relationships, she has little contact with anyone other than her colleague, Hijiri. But a chance encounter with a man named Mitsutsuka awakens something new in her. Through their weekly meetings, Fuyuko starts to see the world in a different light and painful memories from her past begin to resurface.

As Fuyuko realizes she exists in a small world of her own making she begins to push at her own boundaries. But will she find the strength to bring down the walls that surround her?