Takanoiwa retires following recent assault on stablemate | The Japan Times

The Japan Sumo Association accepted the resignation from Takanoiwa, who himself was a victim of assault last year that led to the resignation of Harumafuji.

https://www.japantimes.co.jp/sports/2018/12/07/sumo/takanoiwa-retires-following-recent-assault-stablemate/#.XAroPVT7QdU