Touhai: Ura Rate Mahjong Touhai Roku S01

Fewer people know that one of the most talented and ruthless Mahjong players in town is a high school student. "Ki", a quiet but precise and determined teenager, has exceptional skills in observation and experience in the game, which keeps him afloat in a world filled with powerful, wealthy, and dangerous individuals. Currently, "Ki" is hiding a girl named "Amina" who has entered the country illegally and is protecting her from deportation. He sleeps during the day and participates in Mahjong tournaments at night with high stakes, waiting for an opportunity to face a worthy and powerful opponent.