While playing in Kashiwa Reysol youth ranks, Kohei opted for an abroad experience in New Zealand, where he signed for Onehunga Sports on 26 March 2015.
Return to Kashiwa Reysol
On 8 January 2016, Kohei then came back to Reysol, finding his first cap only after a year of orientation. He debuted on 15 March 2017 in a J. League Cup match against Shimizu S-Pulse and he even scored the winning-goal for Reysol.[1]
Yokohama FC
On 1 February 2020, Kohei joined J1 League outfits, Yokohama FC on loan however on 1 February 2021, he joined the club on free after his loan contract expired.
Sagan Tosu
On 25 July 2022, Kohei joined J1 League club, Sagan Tosu. On 10 May 2023, he scored his first goal for the club in a 2–0 away win against Urawa Red Diamonds. Kohei than went on to contribute 3 consecutive assists in 3 games throughout the season.