Kyuta Kumagai, 10, trains on a Dohyo, a traditional ring in which sumo wrestling bouts are held, at Komatsuryu Sumo Club in Tokyo, Japan, December 6, 2020. "Sumo training is something you don't describe with words like 'enjoy'," Kyuta said. "When it became tough? I have thought about (quitting) sometimes." REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON SUMO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES