Toshi Kumakura is a professional mahjong player and a supporting character in the manga "Saki" and its spin-off manga "Saki: Achiga-hen episode of side-A". She was previously a scout for a professional mahjong team in Fukuoka. Toshi became a consultant for Miyamori Girls' High School in Iwate Prefecture several months prior to the main story and is very perceptive in the abilities of other players. She is responsible for bringing Toyone Anetai into Miyamori's mahjong team.