Kohno started his racing career in Japanese Formula 4 Championship from 2015 the inaugural season of the series.

He raced in the series till 2017 claimed 3 podiums, and finished on 8th, 10th, and 7th place from 2015 to 2017 respectively.

[citation needed] Kohno steps up to Japanese Formula 3 Championship in 2018 with RS Fine.

He continues to race in the rebranded series Super Formula Lights with the same team from 2020 to 2021.

[citation needed] Kohno competed in Super GT in 2020, where he partnered up with Hiroki Yoshimoto.