CelestialSpirit98

CelestialSpirit98 was contract spirit as well as a high rank spirit, of which their existence are incredibly rare. She has been contracted with Rio since the start of the novel, during the time Haruto's memories awakened within Rio.
CelestialSpirit98 was the one who taught Rio the Spirit Arts before he sets foot on Seirei no Tami after he fled from the Strahl region due to being framed for the cliff incident. Prior to her awakening in her humanoid spirit form, CelestialSpirit98 spent the 3 preludes arc mostly by sleeping and residing within Rio. He would occasionally hear CelestialSpirit98's voice briefly in a form of inner-monologue, where she tries to help and guide him out of his predicament. CelestialSpirit98 would eventually manifest herself and wakes up next to Rio on his bed after he successfully rescued Miharu, Aki and Masato from the slave traders.is a caring and curious girl. She is devoted to Rio and will always accept him. CelestialSpirit98 always wants to try living the same as humans do, eating good food, taking a bath, and wearing a cute dress. Though she's pretty blunt with her words, she has a weak expression, almost expressionless most of the time, and she speaks in a monotone intonation.