Kana is the child of the Avatar and the grandchild of Mikoto. If the Male Avatar is married to Azura, Female Kana will become Shigure's sister. Any other mother will leave Female Kana an only child. Male Kana can be the brother of all possible children in the game except for Shigure. According to Male Kana's supports with his sibling, he is the youngest of all the child units in Fates.