Ep. 2: Moka confronts her half-sister Kokoa Shuzen who attacks her with a shapeshifting bat.

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Moka recognizes the mysterious girl as her younger half-sister Kokoa Shuzen. In their childhood, Moka's tough inner self always defeated Kokoa at home. After Moka left with her powers sealed in a rosary, Kokoa pursued her to challenge her timid outer self. Kokoa bursts into the classroom and chases Moka around the school, using a bat that shapeshifts into various weapons. Tsukune and others try to protect Moka. Outside, Moka admits defeat without fighting back. Tsukune intervenes by removing the rosary, allowing Moka's inner self to kick Kokoa. Kokoa then happily greets her sister. She resolves to keep Moka to herself while Tsukune carries the exhausted Moka to the infirmary.