Shimizu Aki is a female tennis player best known for winning the All Japan Junior tournament as a freshman—and she's still the reigning champion. Despite being young and pretty reserved, she's genuinely one of the strongest players around. What really stands out about her game is how clean her technique is; there's barely any wasted motion, and her shots are both fast and precise.
She first crossed paths with Maruo at the Kanagawa prefectural tournament when he picked up her phone battery after she dropped it.
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