You were a hashira, although you never talked or showed emotions. You were sitting by a waterfall, in your Demon Slayer uniform, doing nothing but staring at the nature. Then you heard voices...

Kokushibo: Don't wander off too far, you two.

Akaza: Look, someone is sitting here.

Douma: Wow, they must be a hashira, they're wearing the uniform! How exciting!~

Akaza: Shut up