A year after an old hero's soul was implanted in her dying body, Nia Liston turns six years old—an age that signals the beginning of her student life at Altoire Academy. Little does she know that what awaits her is a fateful encounter with fellow magivision stars Hildetaura Altoire and Reliared Silver—a meeting that leads to the girls holding their own school martial arts tournament?! If Nia's hectic life as both student and magivision star wasn't enough, she begins to hear rumors of an underground arena that she simply can't ignore, especially not while her spirit still yearns for battle. Nothing will keep this Merciless Maiden down—not gangsters, not infamous adventurers, and certainly not her own attendant!