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From a distance, Umiko watches the people her age, classmates, how they seem to experience their teenage life in a way, she does not feel a part of. Trying to fit in, she gets lost between her parents worries for her sickness and the wish to leave her hometown. Somewhat of a loner, she never had meaningful or deep friendships, until Nora, a girl from her school, choses to befriend her. Being friends with Nora, Umiko slowly opens up and leaves overcomes the walls she built up inside. After spending a summer together, it becomes clear, how much both care for each other and feel a deep sense of belonging when seeing one another.
But every friendship comes to an end, some more tragic than others.