You either kill a total of 50 demons or kill one of the Twelve Kizuki. Asskicking Leads to Leadership: The Hashira get to their positions by being goddamn good at their jobs.Astonishingly Appropriate Appearance: Each of their appearances fits their respective Breathing technique well, such as their hair and eye colors, the way they wear their uniforms (whether they're slightly different or completely customized), and their Nichirin blade designs.The anime stuck with Gotouge’s original scheme, the Mark is red across all those who achieve it. Muichiro is the first Hashira to manifest it after Tanjiro started the whole chain of mark awakenings within the series, with that a special colored illustration made by Gotoge showed Muichiro’s mark was red just like Tanjiro’s, settling that the marks were the same color regardless of Breathing Style, however, the official digital colored manga went and gave Muichiro’s mark a clear blue tint in a later portrayal, starting a theme where the digital colored manga would give all marks colorful variations linked to the breathing style each Hashira has.
