Daisuke Yamaguchi works as a photographer for Weekly Mahjong Today, where he's best known for his on-the-ground coverage of high school mahjong tournaments across Japan. He regularly travels with reporter Junko Nishida to capture both prefectural and national competitions, conducting interviews with players. Yamaguchi was actually the first person to notice and point out the connection between Kiyosumi High School's Saki Miyanaga and Shiraitodai High School's Teru Miyanaga, sparking what would become a significant storyline in competitive mahjong circles.
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