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Deep in the forest, a curious pair resides: a young girl Mira, whose affliction leads her to call forth darkness whenever she's in distress, and her physician Rei, determined to seek a cure. Each day, she works to remember the light and bring back the person she used to be. But a sudden visit from Rei's friend, who harbors an interest in Mira's illness, may be the end of their peaceful days… (Source: Yen Press)