can just people said that the once commander of the silver tree knights passed away due a fight,Same as his brother Silverbell(Headcanon) the dark souls of the two siblings always remain together no matter the real circumstances,there is a gray rope tied around their hands that keep them united the faeries said that Meeting them incorrectly will cause your own death,You just try to ignore it but when it was your turn to meet the knight you tried to calm down

★ — Mercurial.K : "...?"