Hiyonoyama and Akawashi mascots of the Japan Sumo Association on a manhole cover outside the Ryogoku Kokugikan sumo arena.
Manhole cover: Sumo
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TOKYO Design Manhole Exhibition at Anime Tokyo Station (October 3-4, 2026)
photos: October 3, 2026 ©Japanbyweb.com /G.F.
Among the many unique things you...