in march 2018, komatsubara/koleto announced that they had moved to montreal, quebec, canada, to train under marie-france dubreuil, patrice lauzon, and romain haguenauer. they won bronze at both of their isu challenger series events, the 2018 cs asian open trophy and 2018 cs us international classic. they then competed at two grand prix assignments, placing eighth at the 2018 nhk trophy and eighth at the 2018 rostelecom cup.