Making their international debut for Japan, Komatsubara/Koleto placed 8th at the CS Lombardia Trophy in September 2017. They finished 10th at their sole Grand Prix event, the 2017 NHK Trophy. In December, the two won the silver medal at the 2017–18 Japan Championships. They placed 10th at the 2018 Four Continents Championships with a historic personal best score of 138.18. They placed 4th at the 2018 Toruń Cup.