Momiji serves as the main character in the series. She's related to Princess Kushinada from Izumo through her lineage. Currently an eighth-grade student in middle school, she is initially unprepared for her role in battling Aragami. To prevent their destruction of humanity and the world, Momiji joins T.A.C. Despite a surprising turn of events, Momiji carries an Aragami "soul" within herself. At times, she receives unwanted panty shots and jokes about her undergarments.