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Kotoko is a custom-made persocom that belongs to the man that kidnapped
Chii. Kotoko, unlike
Sumomo, is not hyperactive but rather serious and annoyed easily. Kotoko is one of the first people to confirm that
Chii is a Chobit and is rather upset about it at first. Kotoko was programmed to tell the truth, no matter what the circumstance,
which got her "abandoned." She also is programmed to do a search when anything out of the ordinary happens. In doing this,
Kotoko learns of
Chitose's high power lines throughout the apartment and contacts her former Master, who contacts
Minoru.