Saki Biyori (YG Ban)

Hisa Takei

竹井久

Hisa Takei (竹井 久, Takei Hisa), formerly known as Hisa Ueno (上野 久 Ueno Hisa), is a third year student at Kiyosumi High School and is the current president of the mahjong club, as well as president of the school's student congress.

Bio from Fandom, licensed CC BY-SA

Saki Miyanaga

宮永咲

Saki Miyanaga (宮永 咲, Miyanaga Saki) is the titular character of the story. She is a first-year student at Kiyosumi High School who is notorious for her ability to break even in every match, as she didn't want to win against her family. However, after joining the mahjong club, she uses her skill for the sake of winning and hopes to progress to the nationals to reunite with Teru Miyanaga. At first, she is distant towards Nodoka Haramura, but she becomes extremely close to her (to the point where they frequently hold hands and draw strength from each other) over time. She gets easily distracted and has a poor sense of direction, which causes her to get lost during excursions, particularly in tournaments. After her performance in Nagano prefectural and the eventual defeat of Koromo Amae, people begin considering her as one of the feared national-class monsters.

Bio from Fandom, licensed CC BY-SA

Nodoka Haramura

原村和

Nodoka Haramura (原村 和, Haramura Nodoka) is the daughter of Kei Haramura and Kaho Haramura and a first-year at Kiyosumi High School who was the previous year's National Middle School Individual Champion.

Bio from Fandom, licensed CC BY-SA

Yuuki Kataoka

片岡優希

Yuuki Kataoka (片岡 優希, Kataoka Yūki) is a first year student at Kiyosumi High School who has been friends with Nodoka Haramura since middle school.

Bio from Fandom, licensed CC BY-SA

Touka Ryuumonbuchi

龍門渕透華

Kana Ikeda

池田華菜

Yuu Matsumi

松実宥

Yuu Matsumi is a third year at Achiga Girls' Academy and a protagonist in the spinoff manga Saki Achiga Hen episode of side A. She is the daughter of Tsuyuko Matsumi and the older sister of Kuro Matsumi who is the fourth member to join the new mahjong club.

Bio from Fandom, licensed CC BY-SA

Mako Someya

染谷まこ

Mako Someya (染谷 まこ, Someya Mako) is a second year student at Kiyosumi High School who is the second person to join Hisa Takei in the mahjong club.

Bio from Fandom, licensed CC BY-SA

Jun Inoue

井上純

Mutsuki Tsuyama

津山睦月