There are a lot of wrestlers of Waka such as Wakanohana, Wacashimazu, and Wakashoyou who take side.
However, it doesn't limit that it is Waka.Oo to a twin mountain alone.
There are a lot of wrestlers of the given four groin name dependence Waka.
Indeed,Incidently, the Takanowaka sumo wrestler is expected from the Takanohana room this time though there was Takanowaka sumo wrestler in the Naruto room.