Webin one of the databooks, it was stated that kokushibo was challenged by 3 demons for his rank.
One of them is akaza.
Interesting thing is he absorbed the other 2 after he.
Webkyojuro rengoku vs akaza was a battle that took place outside the destroyed mugen train.
It focuses on the battle between the flame hashira kyojuro rengoku against upper.
Webfrom shinobu’s sacrifice to the fierce confrontations with doma, kaigaku, and akaza, each fight contributed significantly to the overarching struggle against the.