Amurita, a Zex entity from the Green World, partners with Yuni Tsukigata through a contractual agreement. She exhibits physical traits akin to a tiger person, mirroring her wild and unrestrained nature. Her demeanor remains carefree and independent, often driven by instinct rather than formal structures or expectations.

Despite her free-spirited disposition, Amurita displays steadfast loyalty and protective instincts toward Yuni. Their partnership functions effectively yet unconventionally, with Amurita occasionally bewildered by Yuni's tendency to evade strenuous duties like training. This dynamic never impedes their cooperation, sustaining a compatible alliance. Amurita engages in combat alongside fellow Z/X entities and their human partners, harnessing abilities linked to her beast-like characteristics. She primarily supports Yuni and participates in group missions at Fujimisaki Academy.