Ajigawa stable (2022)

In sumo wrestling, a heya is an organization of sumo wrestlers where they train and live. It can also be termed sumo-beya. All wrestlers in professional sumo must belong to one. There are currently 43 heya, each of which belongs to one of five ichimon. They vary in size, with the largest heya having over thirty wrestlers and smallest just one wrestler. Most heya are based in and around the Ryōgoku district of Tokyo, sumo's traditional heartland, although the high price of land has led to some newer heya being built in other parts of Tokyo or its suburbs.

Sumo is a form of competitive full-contact wrestling where a rikishi (wrestler) attempts to force his opponent out of a circular ring (dohyō) or into touching the ground with any body part other than the soles of his feet.

Aminishiki Ryūji is a retired Japanese sumo wrestler. He made his professional debut in 1997 and reached the top makuuchi division in 2000. He earned twelve special prizes and won eight kinboshi or gold stars for defeating yokozuna. He was twice runner-up in a tournament. The highest rank he reached was sekiwake. After more than 22 years as an active wrestler he retired in July 2019 at the age of 40. He is in the all-time top ten for a number of sumo records, including most career wins, most top division appearances and most tournaments ranked in the top division. He wrestled for Isegahama stable.

Isegahama stable , formerly known as Ajigawa stable from 1979 to 2007, is a stable of sumo wrestlers, part of the Isegahama ichimon or group of stables. Its current head coach is former yokozuna Asahifuji. As of January 2023 it had 19 wrestlers.

Kōtō is a special ward located in Tokyo Metropolis, Japan. The ward refers to itself as Kōtō City in English. As of May 1, 2015, the ward has an estimated population of 488,632, and a population density of 12,170 persons per km². The total area is approximately 40.16 km².

Tokyo, officially the Tokyo Metropolis, is the capital and most populous city of Japan. Formerly known as Edo, its metropolitan area is the most populous in the world, with an estimated 37.468 million residents as of 2018; the city proper has a population of 13.99 million people. Located at the head of Tokyo Bay, the prefecture forms part of the Kantō region on the central coast of Honshu, Japan's largest island. Tokyo serves as Japan's economic center and is the seat of both the Japanese government and the Emperor of Japan.