Rido's original intention was to just kill the child, but upon noticing that he shared the same name as the ancestor, he decided to instead sacrifice the child and wake up the ancestor in order to drink of his blood and get more power. But Rido only manage to wake up the ancestor, before he was attacked by him and was injured. The ancestor looked sadly at the remains of the child before he de-aged himself to the body of a child. When Haruka showed up and realized what had happen, he grieved his son's death and along with Juri raised the de-aged ancestor as their own. Hence the ancestor took over the child's identity as Haruka and Juri's son.