Yayoi Houzuki

Yayoi Houzuki is an elementary student who lost her parents in a car accident. Unbeknownst to most, her parents were killed by the demon fetus Kuubou, who took her mother's soul. Swearing on their grave and her father's ghost, she vows to bring her back. She has polycoria, as well as a skull-shaped symbol in her eyes, which allows her to see both physical and spiritual objects. Due to her car accident, she gained an IQ of over 160 and is unnervingly composed in front of things that would traumatize most children.