The college girl with whom Shin-chan is in love. The first time they met was when Shin-chan was strolling in the neighborhood and got something in his eye. Nanako, though a stranger at the time, took it out of his eyes for him. Since then, they have kept contact with each other, sometimes Nanako inviting Shin-chan to beach resorts and skiing trips etc. Nanako is the only girl that is unruffled by Shin-chan's behavior, and the only one Shin-chan tries to behave for, even being shy and blushing around her. She dreams to be a kindergarten teacher.