Mai Nakahara
is Motoki Furuhata's girlfriend and fellow student at KO University. She later befriends Setsuna Meioh there. In the anime, she is the reincarnation of the Great Monster Rikokeidā. After leaving Japan twice to study abroad, she eventually leaves the country for 10 years, but Motoki is still willing to wait for her. She is voiced by Rica Fukami in the original series and by Mai Nakahara in "Crystal". In the DIC English adaptation, Reika was voiced by Wendy Lyon and Lindsay Collins, while Sara Sahr voiced her in the Cloverway dub. In the Viz Media English adaptation, she is voiced by Erica Mendez.