Sachiko Red Higanbana's Links
Sachiko calls Ver father(she knows he's not), because he has been taking care of her for 8 years. She always listens to Ver, even if the chore Ver asked her to do is hard for her
Sachiko is Ver's niece, they are not really blood related but he treated Sachiko's mother as his big sister. Ver doesnt completely treats Sachiko as his daughter, he is just protecting her because he promised Mary and Sora