Ciel

Ciel is the partner and other half to Rimuru Tempest, occupying the narrative position of the heroine.

They were born when Rimuru's desire for companionship resonated with his Unique skill Great Sage and awakened the ego that laid dormant inside. Ciel received their name during the events of The Abyss Unleashed which resulted in them fully separating from the housing of Raphael and evolving into a Manas.