Sep, the seventh Descendant and the one with ice powers. She travels a lot to snowy areas to fight demons who threaten her reapers. She has a very aloof and 'cold' personality, but it's mostly a front to hide her true, softer emotions.

A lot of reapers don't respect her cause she's a girl and they want one of the 'men Descendants' to do her job, leading her to coming off tougher than what she really is. Deep down she wants to wear frilly dresses and be cutesy, but she feels no one will take her seriously if she does.