Yusa

Yusa is a high-ranking demon hailing from the Demon Realm's ice clan, who regularly ventures into the human world alongside her younger sister Kouji to take on seasonal jobs such as selling shaved ice. Outwardly, she carries herself with poise and professionalism befitting her elite status. However, the moment her sister is mistreated, her calm exterior shatters — particularly toward the mischievous deity who habitually torments Kouji. When pushed to her limit, Yusa unleashes devastating ice-based power capable of freezing her opponents solid, making her one of the very few characters who can genuinely instill fear in even a god.