Fūka Tamaki serves as a shrine maiden at a water god's shrine alongside her close companion, Inori Misuda, attending Hijiribashi University Affiliated High School. Their duties include conducting rituals to maintain calm in local rivers and waterways, with jet racing functioning as a ceremonial practice integral to their religious responsibilities.

She possesses long black hair, typically secured in a ponytail with a metallic silver ribbon, featuring straight-across bangs and sections framing her face, complemented by brown eyes. Her everyday attire consists of traditional shrine maiden garments: light lilac robes with dark purple accents, sleeves extending to the elbows with fuchsia-ribboned cuffs, a prominent fuchsia bow at the front, and a dark purple hakama skirt worn with white socks and sandals. Her racing outfit presents a more revealing adaptation, featuring sleeveless white robes with red trim, golden ropes, baggy arm sleeves fastened by brown bands, a midsection clasp depicting opposing purple angelfish (matching Inori's), brown thong-like bottoms, thigh-high stockings with white trim, and white-and-brown shoes.

Her personality exhibits a duality. One aspect reflects a gentle, attentive caretaker consistent with shrine maiden expectations; she demonstrates concern for others' safety and offers thoughtful advice. Conversely, an intense, aggressive disposition surfaces during races and occasionally in daily interactions, manifesting as cursing, insults—even directed at Inori—and heightened competitiveness. This state typically subsides post-race but can persist.

Within the jet racing circuit, she operates as the Jetter for the team "Suiryukai" (Sea Serpents), piloting the watercraft "Messie The Hunter" while Inori acts as Shooter. Their collaborative racing serves both competitive and ritualistic purposes to appease the water deity. Their relationship forms a core element. Fūka harbors deep affection for Inori beyond friendship, though her volatile outbursts strain their bond. Inori initially misinterprets Fūka's anger as a curse, attempting solo rituals and prayers to "cure" her, inadvertently exacerbating the situation and causing dangerous river turbulence. This leads Fūka to distance herself. Resolution occurs when Inori experiences a divine vision revealing the rituals' insufficiency; she accepts Fūka's dual nature wholly and confesses her feelings. Fūka reciprocates, reconciling their partnership emotionally and spiritually, which successfully pacifies the waters through a unified ritual. Post-reconciliation, Inori responds positively to Fūka's intense episodes.

In broader team interactions, Suiryukai emerges as a formidable unit, often reaching tournament finals. They initially challenge the team MKHU (Manatsu and Yuzu) for perceived insincerity when praying at their shrine for racing success but later forgive them upon recognizing MKHU's altruistic motivations. They also consult the idol team Hell's Kitchen regarding celebratory performances after victories. An OVA episode depicts Fūka participating in a promotional video shoot where carrying a mikoshi (portable shrine) triggers her aggressive racing persona due to the motion's resemblance to jet skiing.

Her surname "Tamaki" means "ring/circle/link/wheel", while "Fūka" combines "maple" (楓) and "flower/blossom" (花).