Lot of questions about his parents. He mentioned that he had parents, plural, and that they weren't home. But it seems like he had a mother who left the father and him, taking what appears to be his little sister with her. But he doesn't seem to be talking about her specifically when he says "parents," so perhaps he has a stepmother? I wonder what the story is behind his mother leaving him, and if it's somehow related to that very distantly related family that sent over Yuki/Shue.