Hideki Motosuwa, a Hokkaido farm boy turned Tokyo student, pivots to Seki Prep School after university rejection, his rural roots fueling social awkwardness in the metropolis. Financial strain pushes him into a cramped Gabu Jougasaki apartment and nightly izakaya shifts, contrasting sharply with his agricultural upbringing.

A discarded persocom salvaged from trash reshapes his world—dubbed Chi for her fragmented speech, she becomes his unintended project. Methodically tutoring her in human norms despite her glitches, Hideki reveals stubborn compassion, treating her malfunctioning pauses as puzzles rather than defects.

Prone to muttering farm-life proverbs in public, his social missteps mask a nuanced moral compass. While collecting risque magazines as "bait," he dissects persocom ethics with increasing gravity, especially after friends share stories of mechanized heartbreak—abandoned lovers rebooting into strangers, grief over wiped memories.

Chi’s gradual autonomy blurs his caretaker role into tentative romance, unsettling his academic grind. University acceptance arrives alongside Sumomo and Kotoko—quirky laptop persocoms foisted upon him—yet Chi’s unpredictable growth monopolizes his attention, her stuttered questions echoing his own insecurities.

Cut off from family funds, his self-reliance hardens into pragmatism, yet he risks stability for Chi’s uncertain sentience. Once viewing persocoms as tools, he now archives her erratic memory files, preserving glitches that hint at consciousness—a testament to their shared, imperfect humanity.