Asa belongs to a quartet of Graviton High classmates acting as loyal subordinates to B-ko Daitokuji. Alongside Mari, Ine, and Ume, she carries out B-ko's orders, conducting reconnaissance, piloting war machines, and assisting in commando-style operations against rivals. The group operates under B-ko's direction for minimal pay, frequently grumbling among themselves about their low compensation, which confines them to cheap meals like ramen noodles.

Within this team, Asa stands as the most ordinary member, lacking the distinct traits of her peers: Ume's chubbiness and glasses, Ine's skinny frame and buck teeth, or Mari's exceptional height and muscular build. This typicality defines her place in the group dynamic.