A hardworking mood-maker who thinks of everything in a positive light, Subaru's always on the go, never settling down. He likes money (not in a materialistic way; he just likes shiny things and loves coins regardless of the value).

He's often with his classmates Hokuto Hidaka and Makoto Yuuki. Together with class B's Mao Isara, the four of them form the unit Trickstar, and they all get along well. Subaru owns a shiba named Daikichi.