Little is known about Rose beyond that she is a young dragon, and thus still unable to change her form. When she is first released from the case "Fang" were transporting her in. She knows nothing but Ryūji's name but soon picks up a few words. Since she can not communicate, or doesn't know, her name Ryūji gives her the name Rose because the dragon scales on the back of her left hand that look like a rose. Rose is aggressive towards nearly everyone, especially if they attempt to touch her necklace, except Ryūji to whom she clings so much to that she will sleep beside him in his bed. Rose also has feelings for Ryuji.