Story follows high school student Saki Miyanaga and her classmates as they become absorbed in the game of mahjong. They target an upcoming national competition.
| Actor | Role |
|---|---|
 Minami HamabeSaki Miyanaga | Saki Miyanaga |
 Nana AsakawaNodoka Haramura | Nodoka Haramura |
 Aika HirotaYuki Kataoka | Yuki Kataoka |
 Seika FuruhataHisa Takei | Hisa Takei |
 Anna YamadaMako Someya | Mako Someya |
 Maiko KikuchiKoromo Amae | Koromo Amae |
 Mariya NagaoToka Ryumonbuchi | Toka Ryumonbuchi |
 Kyoka ShibataHajime Kunihiro | Hajime Kunihiro |
 Ena KoshinoJun Inoue | Jun Inoue |
 Rie KanekoTomoki Sawamura | Tomoki Sawamura |
 Mami KamuraMihoko Fukuji | Mihoko Fukuji |
 Rena TakedaKana Ikeda | Kana Ikeda |
 Aya YoshizakiMiharu Yoshitome | Miharu Yoshitome |
 Mizuki HoshinaSumiyo Fukabori | Sumiyo Fukabori |
| YYuzu HiguchiSeika Bundo | Seika Bundo |
 Natsumi OkamotoYumi Kajiki | Yumi Kajiki |
 Marina NagasawaKaori Seno | Kaori Seno |
 Mari YamachiMutsuki Tsuyama | Mutsuki Tsuyama |
 Aguri OonishiSatomi Kanbara | Satomi Kanbara |
 Rena ShimuraNot listed | Not listed |
 Natsuna WatanabeFujita Yasuko | Fujita Yasuko |