Daisuke Yamaguchi  

, 山口 大介

Daisuke Yamaguchi, who works as a photographer for Weekly Mahjong Today magazine, also appears in the manga "Saki". Along with Junko Nishida, he attends high school mahjong tournaments across prefectures and nations to report on players. Through his travels, Daisuke Yamaguchi notices a connection between Kiyosumi High School's Saki Miyanaga and Shiraitodai High School's Teru Miyanaga in the world of mahjong.