Shinbo introduces Hideki to Minoru Kokubunji, a twelve year old genius who specializes in the field of custom made persocoms. Minoru’s persocoms, including Yuzuki, a fairly exceptional custom made persocom, are not able to analyze Chi either, and thus they conclude that she may be one of the Chobits, a legendary series of persocoms rumoured to have free will and emotions.
Although this could be a possibility, Minoru is confident that it is only a rumour. Yuzuki also adds that she does not resemble any persocom model in any available database …

Hideki discovers that his feelings intensify for Chi whether she is a persocom or not, despite other horrible experiences involving persocoms that happened to his friends. Chi becomes aware of her purpose through a picture book series called A City with No People which she finds in a bookstore.
The books speak about many different things involving human and persocom relationships: persocoms and their convenience towards people as friends and lovers, how there are things that they cannot do and questioning whether a relationship between a persocom and a human is …

“Watashi” (a first person pronoun in Japanese), a character drawn by Chitose Hibiya in a children’s picture book A City with No People, is used in the series to hint at the definition of reciprocated love to Chi, and is used to highlight issues with human-persocom relationships; drawing upon the fact that because persocoms can be programmed to imitate desirable human behavior, humans would opt-out of human relationships, resulting in obvious problems, such as the inability to further produce offspring.

Despite the comedic and ecchi moments, Chobits itself deals with several dualities concerning subject matter it shows. The most explored issue throughout the series is human-persocom relationships. Although the series stresses the ideas of persocoms being loved, the lesson that the series attempts to pass along (being loved for who you are) can be represented in many different ways