After the 2021 German Championships were relocated, Hatakawa surprisingly prevailed over Olympian and former two-time national champion Nathalie Weinzierl and Dora Hus to win her first national title; reigning champion Nicole Schott was unable to attend the competition due to COVID-related restrictions. After the 2021 German Junior Championships and the 2021 European Championships were cancelled and Schott was named to the 2021 World Championships team, Hatakawa was instead assigned to the 2021 Challenge Cup. She later withdrew.