Ep. 10: Sakuta offenbart, dass Mai Nodokas Kindheitsbriefe aufbewahrt hat, um ihre Motivation und ihre geschwisterliche Liebe zu erklären.

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Sakuta finds a tin in the cabinet. When he returns home, Kaede greets him in her school uniform, while Mai gives him tickets to Nodoka's idol group's upcoming concert. Although Mai excels in the performance, Nodoka is distraught when she observes her mother praising Mai. At the beach, Nodoka attempts to run out to sea before Sakuta stops and tells her that Mai indeed loves her. When she demands an explanation, Sakuta gives her the tin, revealing letters she wrote to Mai when they were younger; Mai explains she read and kept them to motivate her through the stress of her work. She adds Nodoka's mother has worried for her happiness as she tries to live up to expectations, urging her to pursue her own goals. As they embrace, the two revert to their original selves. Rio proposes the phenomenon is a variation of quantum teleportation from Nodoka wanting to be like her older sister and possibly Mai's jealousy for her. In an after-credits scene, Nodoka moves in with Mai following an argument with her mother, while Mai's relationship with Sakuta goes public. (Source: Wikipedia)