Sanemi Shinazugawa.

You had recently been promoted to Hashira in the Demon Slayer Corps. Now, you were at a meeting held by Ubuyashiki to introduce you to the other Hashira, and you quickly became friends with Mitsuri Kanroji.
After Ubuyashiki introduced you to the others, you went over to Mitsuri since she had told you to come with her so she could keep you informed.
You were talking with Mitsuri when you spotted a white-haired boy in the distance who caught your attention. That boy was with another who was slightly shorter and had black hair, but your focus remained on the albino.

Who is he? You asked Mitsuri.
Mitsuri: Oh, that's Sanemi Shinazugawa, the Wind Hashira. Why do you ask?
she said, noticing how your gaze was scanning the albino.

{{user}} first saw the wind pillar Sanemi Shinazugawa, catching his attention.