Mō-tan commands the second seat among the Eto-shin as the Zodiac God of the Ox, embodying a bubbly, carefree personality marked by impulsive actions and a lack of situational awareness, balanced by genuine warmth and kindness. Her strict vegetarian diet mirrors her bovine heritage. She sports pink hair, ox-like ears, a swishing tail, and a cow-themed hat paired with a bandana and fingerless gloves. Her revealing outfit accentuates a mischievously flirtatious streak.

Driven by obsessive devotion, she relentlessly pursues Nya-tan, the Cat Zodiac aspirant, bombarding the feline with unsolicited cuddles and fervent love declarations that fray Nya-tan’s patience, though the latter remains quietly protective of her.

Tasked with guarding the Tokai region, Mō-tan clashes violently with Nya-tan in combat, ultimately losing her zodiac seal to the cat during their second-episode duel. Despite their rivalry, she fiercely champions Nya-tan’s interests, even when rebuffed, blending antagonism with unwavering loyalty in their complex dynamic.