Ep. 1: Kuromi reveals her long-lost sister Romina and plans to find her with Baku's help.

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Kuromi discloses to Baku that she has a sister named Romina whom she has not seen for a long time. Relying solely on fragmented memories and a single photograph, she decides to embark on a journey to locate her relative. The narrative focuses on her determination to reunite with Romina despite the limited evidence available. Baku listens to her story as she formulates a plan to track down her sibling. The episode explores the challenges of searching for someone with only a photo as a guide, highlighting the uncertainty of whether they will successfully find her using such minimal information.