Roa is the leader of RoaRomin, the band he and his cousin Romin Kirishima play in. Roa was present at the 60th Goha Dueling Tournament where Otis gave "Sevens Road Magician" to Yuga Ohdo, and after being passed over to become the King of Duels, Roa set his sights on obtaining the title. To this end, Roa uses his bandmates, most prominently Romin, to aid him in manipulating events to do so, having her spy on Yuga and learn about Rush Dueling.