Koshi Osaki is a professional footballer from JPN and is currently 28 years old. He is on the books of Mito Hollyhock and wears shirt number 3. His main role on the pitch is Midfield. He measures 174cm in height and weighs 64kg. His stronger foot is Left. His estimated market valuation currently stands at 650K €.

His latest transfer saw him join Mito Hollyhock from Osaka University of H&SS via on 2021-01-31.

Over 4 appearances in the Japanese J1 League 2026, Koshi Osaki contributed 0 goals and 0 assists, completed 4 key passes from 142 total passes, and posted a passing accuracy of 26.3.