Kotaro Arima is a 25-year-old professional football player from JPN. He currently plays for Oita Trinita, wearing the number 9 shirt. He plays primarily as a Forward. He stands at 181cm tall and weighs 71kg. His preferred foot is Right. His current market value is estimated at 300K €.

His most recent move was a from Iwaki FC to Oita Trinita on 2025-01-19.

In the Japanese J2 League 2025 season, Kotaro Arima scored 5 goals and provided 1 assists across 27 appearances, averaging 0.2 goals per game with 64 shots attempted and 14 on target.