Rio Asahina

Rio Asahina (朝比奈 里緒, Asahina Rio) is a major supporting character in Gamble Fish. She is Mika Shishidō's best friend, the captain of Shishidō Academy's billiards club, a sports scholarship student, a consecutive Japan Women's Open champion, and the world junior billiards champion. She first opposes Tomu Shirasagi in a 4.8 million yen nine ball match, but later reconciles with him and becomes one of his allies.