Mako Someya is a second-year student and the founding member of the Kiyosumi Mahjong Club under Takei Hisa's leadership. She grew up around mahjong—her family runs a mahjong cafe that was once a parlor—so she's picked up an almost encyclopedic knowledge of game scenarios. She's developed the ability to recall these situations during matches, particularly when she removes her glasses, which seems to sharpen her sense of the game's flow.
Content compiled by AnimeList.moe from publicly available sources.
