[2] Kota Watanabe studies in the College of Business Administration at Ritsumeikan University.

[2] In 2015, Watanabe made his debut for the Japan under–21 side at the Junior Asia Cup.

[4] Kota Watanabe made his senior international debut in 2016 at the Sultan Azlan Shah Cup in Ipoh, where the team came last.

[4] At the tournament, the team won a gold medal, qualifying directly to the 2020 Summer Olympics in Tokyo.

This biographical article relating to a Japanese field hockey figure is a stub.