This vile creature was planted into Yoichiro Tatsumiya by Yasunori Kato before he impregnated her. The creature acted as a safe guard by allowing the evil sorcerer to keep the girl under his control and to ensure that Kato's child would be born without interference. It was only after the creature was removed from Tatsumiya that she could have an abortion, removing the offspring that Kato was planning to use as a sacrifice later in the Showa era.