Iris

Her true identity is Iris who failed to run from the madness of artifacts, and became an existence that wants to collect artifacts for herself. She makes a contract to Yoichi for her purpose and gives her Evil Eye to him. With two Evil Eyes the user has the ability to petrificate people to stone instantly and can use it to multiple targets.

Naruse family has a strong tie to her so if she wants to move and use her artifacts more freely, she must use a body from Naruse family or the vessel will go berserk and she will die because of it.