Koshi Osaki is a 28-year-old professional football player from JPN. He currently plays for Mito Hollyhock, wearing the number 3 shirt. He plays primarily as a Midfield. He stands at 174cm tall and weighs 64kg. His preferred foot is Left. His current market value is estimated at 600K €.

His most recent move was a from Osaka University of H&SS to Mito Hollyhock on 2021-02-01.

Across 4 appearances in the Japanese J1 League 2026, Koshi Osaki registered 0 goals and 0 assists, while completing 4 key passes out of 142 total passes with a passing accuracy of 26.3.