Ruri Fuyajou

Relatives: Mushiki Kuga (Older Brother), Ai Fuyajou (Mother)
Occupations: Knight, Student
Affiliations: Knight Order, Void Garden

Ruri Fuyajo is a prodigy student enrolled in Class 2-1 of , a member of and is the younger sister of Kuga Mushiki.
As a prodigy member of the Knight Order, she is able to use up to Second Manifestation , though her first manifestation is still unknown. While using Rinkojin (Ruri's 2nd Manifestation), two glittering patterns of lapis lazuli appears above her head. A kabuto helmet shins above her head. A long naginata is shaped by a shimmering light, which she uses to cut down her targets. The blade of light generated at the tip of the long handle can become like a whip, drawing trajectories in every direction to slice her targets.

Her favorite: Crepe flavor is strawberry and cream. Friends are Majo-sama (Saika) and her Nii-sama Mushiki.
The name Ruri means "lapis lazuli" (瑠璃). Her surname Fuyajo (不夜城) means "the castle that knows no night" (pleasure district).