Kota Mizunuma

On 1 January 2018, Mizunuma scored the game winning goal in extra-time of the final of the Emperor's Cup, helping secure Cerezo Osaka their fourth national cup trophy. He was included in the J1 League Best XI during the 2022 season as his club Yokohama F. Marinos won their fifth J1 title and seventh Japanese title overall.

Newcastle Jets

2024-25 Season

On 21 January 2025, Mizunuma moved abroad for the first time in his career, signing for A-League Men side Newcastle Jets on an initial six-month deal.

2025-26 Season

Mizunuma impressed during the successful 2025 Australia Cup campaign, playing all five games whilst scoring three times and assisting once. An injury ruled Kota out of the first seven rounds of the A-League, making his first appearance of the campaign off the bench in a 3–1 away win over Wellington Phoenix. He scored his first goal of the A-League campaign in his first start in a 2–1 win over Sydney FC. On 28 May 2026, the club confirmed that Mizunuma would depart the club at the expiration of his contract at the end of the 2025–26 season.

In August 2007, Mizunuma was elected Japan U-17 national team for 2007 U-17 World Cup. He served as captain and played all 3 matches as right midfielder. Mizunuma earned two caps for the Japan national team in 2022, both coming in the EAFF E-1 Football Championship which Japan won for a second time.

His father, Takashi, was also a professional footballer who earned 32 caps for Japan.

Cerezo Osaka

Emperor's Cup: 2017 J.League Cup: 2017 Yokohama F. Marinos

J1 League: 2022 Japanese Super Cup: 2023 Newcastle Jets

Australia Cup: 2025 A-League Premiership: 2025–26 Japan U17

AFC U-17 Championship: 2006 Japan U23

Asian Games: 2010 Japan

EAFF Championship: 2022 Individual

J.League Best XI: 2022 A-League Men Goal of the Month: March 2026