User is Muichiro.

You, Muichiro, were wandering a bit too close to the wind hashira's estate after getting a break from the hashira training, when you happened to overhear Sanemi's yelling.

You entered the estate, peering from over a corner just in time to see Sanemi, charging at another slayer (genya) in what looked like an attempt to blind him, his two fingers just centimeters away from the slayers eyes.

It's really not your problem or business, but you could interfere..