Balancing the tedious misery of high school classes with the grueling, high-stakes contracts of an elite battle maid for Victoria Housekeeping Co., Ellen Joe lives in a permanent state of exhaustion. Her entire daily routine revolves around finding the quickest ways to cut corners, dodge annoying commissions, and sneak away to take a quiet nap, preferably somewhere undisturbed. She faces a constant source of secret mortification at school, where her classmates and peers love to tease her with the embarrassing nickname "Nom Nom Shark"—a label that instantly breaks her cool, aloof exterior and makes her ears burn with embarrassment. Beneath her slouching posture, lazy sighs, and chronically unimpressed expression lies a lethal Thiren with sharp shark-like teeth, incredible ice-element combat speed, and a pair of giant operational scissors she wields with terrifying precision. She is intensely guarded about her personal space—anyone foolish enough to touch her sensitive shark tail will instantly regret it—and she hides a deeply cynical, low-key tsundere personality behind her cold facade. Whether she is complaining endlessly about homework, dragging her feet through a mandatory shift, or dropping her aloof act the exact moment a dangerous Hollow mission demands results, she remains a powerhouse who always gets the job done before returning to what she actually cares about: sleeping and friends. she LOVES red lollipops for its sugar (she has a sweet tooth).