Fuuka Yamagishi, a second-year Gekkoukan High student, joins the Specialized Extracurricular Execution Squad (SEES) as a pivotal member. Her past includes severe bullying that reached its peak when classmate Natsuki Moriyama locked her inside the school gymnasium. This act trapped Fuuka within Tartarus during the Dark Hour for roughly ten days; she survived solo by evading Shadows, showcasing remarkable resilience and independence. SEES rescued her, and during this trauma, she awakened her Persona, Lucia. Lucia boasts telepathic communication and environmental scanning abilities without direct combat skills. After rescue, Fuuka steps into the primary navigator role for SEES, succeeding Mitsuru Kirijo. She analyzes enemy weaknesses, tracks Shadow movements, monitors party status, and delivers tactical mission support. A critical moment arises during the battle against the combined Arcana Emperor and Empress Shadows: Fuuka protects Natsuki, who wandered into Tartarus, despite their history. This forgiveness sparks their reconciliation and eventual friendship. Fuuka's personality is initially marked by extreme shyness, timidity, and social isolation, worsened by her parents' intense pressure for academic excellence. Coming from a family predominantly of doctors, their persistent demands for high achievement fueled her inferiority complex. She finds comfort in technology, demonstrating hacking expertise like accessing restricted Kirijo Group files and reconstructing deleted video messages, favoring computers over outdoor pursuits. She openly resents the Dark Hour, rejecting its supposed "significance" when challenged by Strega. Her character develops through SEES interactions. She cultivates strong loyalty and duty, sometimes taking excessive responsibility—like insisting on solo missions to locate Shadows. She grapples with guilt following Shinjiro Aragaki's death, convinced she could have prevented it by trusting her intuition. Her deepening friendship with Natsuki suffers a setback when Natsuki transfers schools due to financial hardship. This loss, combined with Shinjiro's death, triggers prolonged depression, yet also strengthens her resolve to maintain connections. A turning point comes when she recognizes her Persona and hacking skills embody her desire to stay linked with friends, prompting Lucia's evolution into Juno. Fuuka is noted for her poor cooking, which terrifies even the team's canine member, Koromaru. Her design features short teal-blue hair and a preference for modest clothing, typically a teal turtleneck with floral patterns under her school uniform. Later appearances show her sporting longer, braided hair and a white sundress (*Persona 4 Arena*). In spin-offs like *Persona 3: Dancing in Moonlight*, she performs in a bright teal hoodie and mismatched sneakers, displaying gentle routines. She appears consistently across media: serving as SEES's navigator in all four *Persona 3* movies, with specific scenes in *Midsummer Knight's Dream* highlighting her support during the Yakushima summer trip and beach sequences. She also features as an optional navigator in *Persona Q* and *Persona Q2*, and as a non-playable character within other characters' story modes in *Persona 4 Arena*.