Rise Fujiwara
Rise is a third-year at Kyuushuu Sekizan High School in Kagoshima Prefecture. She's one of the standout mahjong players in her prefecture, though fans often note she's better known as a supporting character in the spin-off manga Saki: Achiga-hen episode of side-A.
Despite her skill level, Rise had a rough go in the previous year's prefectural qualifiers when Komaki Jindai from Eisui Girls' High School basically shut down her entire strategy. It's the kind of loss that sticks with you—at least, that's what the narrative suggests.
Content compiled by AnimeList.moe from publicly available sources.
