|Japanese name:||対木 もこ|
|School:||Kakuouzan High School|
|Grade:||First-year high school|
|Debut:||Saki Achiga-hen, Chapter 7|
|Voiced by:||Omi Minami|
Moko Tsuiki is a first-year student at Kakuouzan High School in western Aichi Prefecture. Moko is the top ranked player in the city of Tokai, Aichi Prefecture, despite only learning mahjong five months prior. Kakuouzan does not qualify for the 71st Inter High's team tournament, and she is not entering the individual tournament.
Moko has short blond hair and brown eyes. She wears a frilly light pink dress and a light pink bow which covers her left eye. She has bandages on her forearms and wears a ring on her right middle finger.
Moko appears to be a quiet girl outside of the mahjong table. However during mahjong she has a frightful personality.
Playing Style / Abilities
Not fully shown. However when she is playing Moko draws a dark aura around her.