Nobuko Saeki is a fifty-four-year-old spiritual fortune teller who writes a well-regarded fortune telling column for a magazine called Housewives' Knowledge, despite personally disliking the occult. She possesses an exceptionally strong spiritual sense that enables her to see Guardian Characters, which ordinary humans cannot perceive. Her role in the story is significant as she inspires the protagonist Amu Hinamori to wish for a new self, thereby igniting Amu's desires and setting the main events into motion. Later, she assists the Guardians by helping them infiltrate the Easter headquarters, guided by her insight that Amu is searching for someone precious to her. Her personality is warm and perceptive, and she shows a particular fondness for Tadase Hotori, likely because he resembles Tsukasa, an astrologer associated with her magazine. Her notable abilities include spiritual perception and fortune telling, which she uses to guide and support the main characters. She appears in the original Shugo Chara! series and its sequel Shugo Chara!! Doki, consistently serving as a helpful supporting figure. Physically, she has short purple hair and blue eyes. Her motivations stem from a genuine desire to use her gifts to help others, and she remains a steady, encouraging presence throughout the story.