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Nakoruru is one of the most recognized characters from the series and "mascot" (alongside Haohmaru). Since her introduction in Samurai Shodown, she appears in every title of the series -but is not playable in Samurai Shodown: Warriors Rage. Her alter ego, Rera, premiered in the PC and Dreamcast video game Nakoruru: Ano Hito kara no Okurimono and was later incorporated into the fighting games in Samurai Shodown V.

Source from Wikipeida