" Hideki Motosuwa  "

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A 19-year-old repeat student attempting to get into a university by studying at a cram school, while working at an izakaya. One night, while walking home from the convenience store, he finds a persocom lying in a pile of garbage. He takes her home, and upon activating her, finds that the only word she can speak is "Chi". Because of this, he gives her the name "Chi" (in the anime, "Chii") and takes her into his care, doing his best to protect and teach her.