After completing high school, Hideki Motosuwa aims to enter his desired university by enrolling in a cram school in Tokyo. Balancing this with his job at a bar to sustain himself, he remains unaware of the latest technological marvel—humanoid computers called Persocoms. Yearning for his own Persocom, luck smiles upon Hideki when he discovers a discarded one in the trash. Upon activating her, he realizes she can only say the word 'Chii,' prompting him to christen her with the same name. Little does he know that Chii is no ordinary Persocom but a rare and advanced model known as a 'Chobit,' capable of independent thought and learning. Tasked with guiding Chii through everyday life, Hideki delves into the enigmatic world of Chobits, seeking to unravel its mysteries.