Mifuyu

Mifuyu (三冬, Mifuyu) is the youngest child of Sieg, and is his and Ivlin's daughter. Born a few years after her older brother Ivame, Mifuyu was always closer to Sieg, while Ivame was closer to Ivlin, which affected the way they grew up. For example, when Sieg one day left the Pitch Black World, Ivame took his mother's advice and stayed calm, knowing he'd one day come back, while Mifuyu panicked, going off on her own to look for Sieg. As one of the only children of Ivlin and Sieg, she is treasured by the two, just like her brother.

Trivia

 * Mifuyu's name means 'Three Winters'