Fuuka Narutaki, the older fraternal twin of Fumika Narutaki, attends Mahora Academy's Class 2/3-A. Her pink pigtails and bright pink eyes frame her 128 cm stature, marking both twins as their class's shortest students despite matching peers in age. Documented physical measurements list her as B62-W46-H55 at 54.3 kg. She was born on December 6, 1988, with blood type A. Energetic and mischievous, Fuuka delights in pranks and sweets but recoils from ghosts and stationary objects. She acts impulsively with tomboyish flair, contrasting Fumika’s reserve. Inseparable from her sister, both admire upperclassman Kaede and join her Strolling Club, where they pursue self-proclaimed "ninja training" using explicitly fake ninpou techniques. Her recreational skills include navigating Mahora Academy’s campus as a Strolling Club member, aiding Negi Springfield during orientation. She often dons ninja attire for basic eavesdropping. Her Pactio card, "Geminae Simulatrices" (Simulating Twins), resulted from both twins simultaneously kissing a copy of Negi in a botched ritual. Its effects vary: non-functional in the manga; a shadow doppelganger ability in the first anime; and bumblebee/detective transformations with costume artifacts in *Negima!?*. Fuuka assists Negi against the Mage of the Beginning to rescue Nagi Springfield. Offscreen during the Christmas arc, she and Fumika encounter incognito magic princes disguised as animals. Post-graduation, she marries immediately, bears a daughter, and settles near Ariadne in the Hellas Empire borderlands alongside Fumika—who also marries and has a child—making them early starters among classmates. Trivia notes her name’s meaning ("windy fragrance"), her high academic rank (below Chizuru Naba), an unused magic princes storyline, and her near-designation as Sayu Narushima.