The princess of Rakios of the northern part of Phantasmagoria. She assumes power later after her father, the king, dies during an assault. Lestiina (more commonly known as Lesteena) also has greatly different ideals than her father, though being just as ambitious; she feels no hatred and malice against spirits as most people do. While Kaori was under her watch, she regularly visited Kaori while she was locked in her room. Lesteena also hides herself as Lemuria at times to have fun.

Yuto Takamine and his younger sister-in-law Kaori, were at their parents' grave, when they were suddenly summoned into another world, Phantasmagoria. The King and a woman named Restina took Kaori as a hostage, and ordered Yuto to fight against their enemies. Then, the King gave him a sword called Motomeh to protect their kingdom from enemy spirits. Kaori will only be freed if Yuto helps protect Phantasmagoria. Thus, Yuto's journey begins...
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(Source: Anime News Network)

Lestiina Dai Rakios