Touhai Ura Rate Mahjong Touhai Roku manga tells the story of Kei, a quiet high school boy who is secretly one of the most skilled and ruthless Mahjong players in the city. Despite his young age, Kei’s sharp observation skills, determination, and experience in the game help him navigate a world filled with powerful, wealthy, and dangerous individuals. He is also hiding a girl named Amina, an illegal immigrant, and protecting her from deportation. Kei spends his days sleeping in class and his nights playing high-stakes Mahjong, always waiting for a worthy opponent to challenge him.