Issei Tone is a defender from Osaka. He played youth football with Nagano FC and Kokoku High School before attending Tokai Gakuen University. Kataller Toyama signed him in 2019, and he later played for Iwate Grulla Morioka and Kagoshima United, building experience mainly in the lower divisions of the J.League. Tone joined Oita Trinita in 2025, where he continued as a centre-back option with professional experience across several Japanese clubs.