Asuka is a young Japanese woman with long black hair. Both of her concept designs had her barefoot and wearing a black hakama. In her first concept, she wore a white headband with a red spot in the middle akin to the Japanese flag, black wristbands, and a white sarashi covering her chest and breasts. In her second concept, she had a different hairstyle and a white long-sleeved aikidōgi with a black undershirt. A small picture in the right showed her with a Noh oni mask.