A fox-girl and skilled sword fighter who once fought alongside the Oracle Knight. Surrounded by humans who sought to hunt the ever rare fox-people，Ruby was saved by the Oracle Knight from this peril. Smitten by the knight who had saved her，Ruby decided to follow him，accompanying and aiding him in his journey. It was after meeting the Oracle Maiden dear to the Oracle Knight's heart that Ruby officially joined their cause. However，she never got along with her comrade Dion，resulting in a relationship made of endless bickering.