Ton, director of the accounting department, emerges as an imposing antagonist, cultivating a hostile work environment through overt sexism, relentless delegation of tasks, and belittling remarks toward the protagonist. His Duroc pig-like features—rosy-brown skin, a heavyset frame, and a wardrobe of white dress shirts, green ties, black pants, and brown shoes—mirror his stubborn, old-fashioned demeanor. Technologically inept, he clings to an abacus, resists modernization, and prioritizes golf over duties.

Beneath his abrasive exterior lies unexpected complexity. He shields subordinates during corporate restructuring by refusing to draft layoff lists, a decision costing him his position. Though harsh, he intermittently offers shrewd advice during the protagonist’s personal struggles, hinting at a buried belief in her leadership potential. His dynamic with Tsunoda, a subordinate who manipulates him via flattery, contrasts his usual rigidity: he blushes at her praise and showcases uncharacteristic golf prowess.

Family anchors his identity. A doting yet overbearing father to teenage daughters, he fills his workspace with their photos and cites family as his foundation, though his intimidating presence causes mutual discomfort. Reluctant participation in Family Appreciation Day underscores this tension.

His arc pivots post-demotion. Forced to resign, he later collaborates with the protagonist as an accountant in her political campaign, adapting to new roles. The derisive nickname “Calendar,” mocking her perceived job instability, softens into mutual respect. A drunken confession at a company party reveals regret and recognition of her competence, cementing their evolving dynamic.

Professional decline and eventual support for the protagonist trace a nuanced journey from adversary to grudging ally. While stubbornness and traditionalism persist, flashes of vulnerability and growth temper his workplace tyranny, revealing fractured layers of mentorship beneath the surface.