Rina Takashimizu attends Verone Academy and plays on the lacrosse team alongside Nagisa Misumi and Shiho Kubota; Shiho is her best friend. Taller than both Nagisa and Shiho, she has brown eyes and light brown hair, typically styled in low pigtails secured by pink scrunchies or bands, with center-parted bangs. She is most frequently seen wearing the standard Verone Academy uniform.

Her personality centers on stereotypical teenage interests like shopping, discussing romance, and eating sweets. She actively engages in gossip, particularly about boys and school rumors, and exhibits a playful tendency to tease her friends. She displays a lack of seriousness toward schoolwork.

Across official media, she remains a minor supporting character. She appears intermittently as part of Nagisa's social circle in the television series *Futari wa Pretty Cure* and its sequel *Max Heart*. Her sole confirmed movie appearance is in *Pretty Cure Max Heart 2: Friends in the Snow-Laden Sky*, where she joins the group trip to a ski resort, participating in typical recreational activities with classmates. No unique contributions or character development are attributed to her in this context.

Her name, "Takashimizu Rina," carries etymological significance: "Takashimizu" (高清水) combines "taka" (high), "shi" (pure), and "mizu" (water), collectively suggesting "pure as a mountain spring." "Rina" (莉奈) incorporates "ri" (associated with jasmine) and "na" (a phonetic character), forming an overall meaning interpreted as "noble water jasmine."

No substantial character evolution, expanded backstory, or significant narrative contributions beyond these established traits and appearances are documented in the available official media sources.