Shidou Tennouji

Tennouji Shidou is a third year student at Tottori Hakurou High School, as well as the captain of its sumo club. He has won the title of High School Yokozuna in individual bouts during his first and second years. He is also the winner of the All-Japan Championship during his second and third years.

(Source: Hinomaruzumo Wiki)