The champion sumo (Yokozuna) is inside the sumo match place.
At the top of the sumo fight hill, near the marketplace.
The island that has sumo-wrestling in it is the Red Dragon.
There is no "Sumo Island." The island that features ancient Japan and a sumo challenge is Red Dragon Island. (see the related question)
You go to the sumo wrestling place and do Kanji copies, then sumo wrestle. You have to defeat the Yokozuna (champion), which makes the policeman lose his bet.
you cant
in the West Edo
Go to the sumo wrestling area
well first you beat the champion sumo and the guards will come and get you then an old man comes and saids that you are with him then he tells you to meet him at his house on the est side of red dragom island
you go to the sumo match with the card the soldier gives you
How do I sign the autographs for the sumo wresler in red dragon island in poptropica
do the order for the people that are walking around and then go to the sumo rink and then the doors are open.
In West Edo, left of the Fortress in East Edo.