This vile creature was planted into Yoichiro Tatsumiya by Yasunori Kato when he impregnated her. The creature acted as a safe guard, 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 planing to use as a sacrifice later in the Showa era.