Nikaido presides over Hungry Bug, a ramshackle diner in the perilous dystopian city of the Hole, serving gyoza to a meager stream of customers. Amid the city’s dangers, she sustains an unyielding generosity, routinely feeding her ally Caiman free of charge. Her steadfast loyalty fuels her partnership with him, hunting the sorcerer who cursed him with a reptilian head and stolen memories, battling magic-wielding experimenters preying on the Hole’s populace. A combatant favoring acrobatic hand-to-hand skills over sorcery, she masks her magical lineage to evade scrutiny. Her rare Time Magic crafts history-rewriting devices, constrained by brief temporal windows—a power pivotal in rescuing allies and undoing past calamities. Born a sorcerer, she abandoned her heritage to dwell among humans in the Hole. In youth, she endured brutal Devil training under Asu, a devil who granted her immortality and insight into reality’s fabric, tethering their fates irrevocably. Forced into servitude by En, a sorcerer crime lord, via a binding magical contract, she later shatters these chains during a violent clash. Her entanglement with the Cross-Eyes—powerless sorcerers resisting magical oppression—deepens her dual role in the strife between humans and sorcerers. Her evolving appearance mirrors her trials: utilitarian garb during Devil training, En’s crimson jumpsuit under his thrall. Yet her resolve to shield the Hole’s vulnerable, coupled with loyalty and blunt pragmatism, remains unshaken. Her bond with Caiman thrives on trust and shared battles, their camaraderie rooted in unraveling his curse and guarding their cobbled-together family, devoid of romantic entanglements.