Kabae, an anthropomorphic hippopotamus, navigates corporate life in the accounting division of a Japanese trading firm. She thrives on spreading rumors and office gossip, interweaving tales of her domestic world—a doctor husband (who treated her after a self-imposed silence led to health issues, sparking their romance), three boisterous sons, and a nephew—into daily chatter. Her family bonds shine through lighthearted moments, like her spouse theatrically "absorbing" their youngest’s scraped-knee pain.

Professionally, she dons a crisp white shirt, blue vest, and polished brown shoes, while off-duty outfits feature a vibrant spotted orange blouse paired with a bold purple winter jacket. Unbeknownst to colleagues, she moonlights in espionage, clad in a pink spy suit equipped with night-vision goggles and specialized gadgets—though she deflects with jokes about tropical getaways when questioned.

Though her bubbly chatter initially masks her depth, she demonstrates authentic care—nursing Retsuko through fever and guiding Anai through workplace struggles. Persistent kindness surfaces through lunch-sharing and championing Anai’s culinary skills, challenging perceptions of her as merely nosy.

Across career challenges, including pressure to resign during cost-cutting initiatives, her loyalty shines as she agonizes over colleagues’ stability. Initial friction with Retsuko over gossip transforms into collaborative respect during covert evidence-gathering operations for corporate probes.

Her sharp deductive instincts, evident when her sons trace hidden Christmas gifts via mud clues, complement her clandestine missions, though her true priority remains navigating spreadsheets and soccer practices with equal dedication.