Mikiko Oguro earned the nickname "Kuromi" from the production head upon joining Studio Petit. Childhood inspiration from the fictional anime "Luis Monde III" drove her toward an animation career, leading her through animation school and into the studio. Shortly after her arrival, the production head's serious illness forced him to transfer his responsibilities, appointing her Production Desk Manager for "Time Journeys" episode two. She inherited a project severely behind schedule: only five of 318 key frames were complete after four weeks, with just one week remaining. To meet the deadline, she motivated a scattered and demotivated team, tailoring her approach to each animator. She provoked rapid drawing from a housewife animator through pointed remarks about domestic life and confiscated a surfer animator's board to prevent distraction. She relocated a reclusive artist into the studio and personally delivered supplies to maintain momentum. During the final push, she unified the entire team within the studio to collectively meet the deadline.

Her role subsequently expanded to managing three simultaneous anime series. This increased responsibility brought new challenges, notably collaboration with a veteran producer who prioritized strict deadlines over artistic quality. She navigated conflicts between maintaining schedules and preserving creative integrity, facing pressure to reduce essential quality checks and directorial oversight, forcing critical decisions about balancing constraints and output standards.

Her experiences trace a path from inexperienced newcomer to capable manager. Initial traits included determination and occasional naivete about studio operations, alongside persistent admiration for "Luis Monde III" as both nostalgic inspiration and a quality benchmark. Over time, she demonstrated adaptability in handling diverse personalities and resolving logistical crises, alongside a growing understanding of the compromises inherent in animation production.