Tsunogai competed at the
2023 Junior World Championships alongside
Haruto Kamiyama and
Masaharu Tanida; together they won gold as a team. During individual finals he placed fourth in the all-around, seventh on floor exercise, fifth on rings, and won gold on parallel bars and horizontal bar. In 2025 Tsunogai competed at the
DTB Pokal Team Challenge where he helped Japan place first as a team; individually he won gold on the parallel bars. At the
2025 Asian Championships he once again helped Japan win gold as a team. Individually he won silver medals on parallel bars and horizontal bar behind
Shinnosuke Oka and
Tang Chia-hung respectively. In July, Tsunogai competed at the
2025 World University Games where he helped Japan win gold as a team. Individually he won gold on the parallel bars. Tsunogai was selected to represent Japan at the
2025 World Championships. While there he qualified to the parallel bars and horizontal bar finals in third and first respectively. He went on to win the silver medal in the parallel bars final behind two-time Olympic champion
Zou Jingyuan and placed fourth on horizontal bar. == Competitive history ==