Reverie Metherlence, better known as Ren, is an Edel Raid and direct descendant of the Metherlence bloodline. She is also one of the Seven Glittering Jewels, an Edel Raid line said to be the strongest. She recharges her powers by sleeping, which happens fairly often. As the story progresses, she realizes that she has developed feelings for Cou. Her elemental gelade is on her hair above her forehead. Her elemental power is wind, which she best uses defensively. Her weapon form is a giant sword on Cou's right arm.
Source from Wikipeida