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Haruru, a shy middle school girl, struggles to connect with her first boyfriend, Nagi, whose busy life at a prestigious school leaves their relationship feeling distant and awkward. Her world shifts when she’s asked to manage the athletic club by Sou, an old friend of her best friend Chika, sparking new emotions and unexpected connections. Set against the backdrop of Sapporo, where a local jinx claims that couples who see the Blue Train together will stay united forever, Haruru navigates the complexities of young love, friendship, and self-discovery. As she meets new people and learns more about herself, Haruru’s journey is one of growth, heart, and the gentle unfolding of her feelings.
