After his initial retirement, he formed the Drago Corse team, which competed in Super GT's GT500 class in 2015 and 2016 before withdrawing from the series.

Michigami and the Drago Corse team would return to Super GT in 2018, albeit competing in the GT300 class with the NSX GT3.

This marked Michigami's return as a full-time competitor, and his first season as a driver-owner in the series.

Drago Corse also competed in All-Japan Formula Three Championship as the ThreeBond Racing team.

In 2017, Michigami drove a factory Honda Civic in the World Touring Car Championship.