In the Demon Slayer series, the Infinity Castle arc is a defining moment for the Demon Slayer Corps because of the battle for ...

Out of the Twelve Kizuki, Kokushibo, the Upper Rank One ... Also, during a meeting in the Infinity Castle, when he is introduced for the first time, all the 12 Moon Kizuki feared him greatly.

Even though Akaza was unable to defeat Kokushibo when challenging him for the position of Upper Rank One, Kokushibo spared his life, finding the challenge entertaining. This suggests that Akaza ...