Shiro Materia

Behind her perpetual smile and gentle tone lies a surprisingly sadistic side that defines Shiro Materia's true nature. She delights in teaming up with her twin sister Kuro to pull elaborate pranks on fellow Frame Arms Girls like Stylet, savoring every flustered reaction they provoke. Though her frame lacks external armor plating, she compensates with exceptional agility and seamless twin-unit coordination, all while quietly collecting combat data—and mischief—along the way.