Kammala jumla mai zuwa: A 2018 Rhythmic Challenge a watan Fabrairu, Mizuno ya kasance na uku a cikin duka tare da maki 63.800. A ƙarshen Maris, an sanya Mizuno zuwa gasa huɗu na ƙasa da ƙasa: Gasar Sofia ta Duniya daga Maris 30-Afrilu 1; Baku World Cup a Baku, Azerbaijan daga Afrilu 27-29; Guadalajara World Challenge Cup daga Mayu 4-6; da Portimao World Challenge Cup a Portimao, Portugal daga Mayu 11-13. A watan Yuli a
Gasar Gasar Gymnastics ta Amurka, Mizuno ta kasance ta huɗu a cikin kungiyoyi kuma ta biyar a cikin duka. A Gasar Zakarun Amurka a watan Satumba, ta lashe azurfa a hoop, a bayan abokin aikinta Laura Zeng kuma a gaban Marina Malpica na Mexico.