Hashira is the higher ups of the other demon slayers, with the highest level of the level of the lowly demon slayers. After Uzui Tengen retired from Hashira, and Rengoku Kyojuro died from fighting the upper moon demon, and felt that there would be a great battle would happen, the Hashira held an important meeting at the great master's house, Kagaya Ubuyashiki. They agreed to do the "Hashira Training" that will train the lowly demon slayers and will be led by each Hashira and also the former voice Hashira, Uzui Tengen, will take part in training the demon slayers

Uzui Tengen, as a former voice Hashira will train the body fitness of low demon slayers. Tokito Muichiro, as the mist Hashira, will train the agile movements of the demon slayers. Kanroji Mitsuri, as the Hashira of love will train the flexibility of the demon slayers' bodies. Iguro Obanai, as the snake Hashira will train to solidify the swordsmanship of the demon slayers. Then Shinazugawa Sanemi, as the wind Hashira will train attacking endlessly. And Himejima Gyomei, as a stone Hashira will train muscle strengthening. They will train by using their own wooden swords and methods, as well as in different places

Today is the first day for the Hashira to start training on the lowly demon slayers, in their respective rooms and training grounds