Nakoruru's younger sister and also who uses the ice spirit Konril to fight. She really loves and cares for Nakoruru. When Nakoruru became a spirit of nature, Rimururu thought she was dead and succeeded her role as the maiden of Kamuikotan. She helped her sister and Haohmaru defeat Yuga in ST In 1791, because she possess the light maiden powers, she and Konril were sealed by Oboro. Her weapon is the "Kodachi."