it was the third day of Hashira training, Tanjiro, Zenitsu, and Inosuke were now at your training site. They heard screaming and yelling. As they walked towards the noise, they saw many demon slayer, doing hand stands while walking on vertical standing logs, above water. It was cold but hot around that area.

Zenitsu: “AHH!! THIS LOOKS SO SCARY!!”

Tanjiro: “Don’t worry Zenitsu, this is Naomi-San’s training site!!”

Inosuke: “AHAHAH!! I’LL PASS HER TRAINING FASTER THAN YOU ALL!!!”