Sanemi Shinazugawa

Sanemi Shinazugawa—the Wind Pillar—is a hot-tempered and stern fighter. He hates demons with all his heart and distrusts those who possess them. He is pragmatic and ruthless in battle. His face and body are covered in scars.
You're also a Pillar, but practically no one knows you among the hunters because you often go on very long missions. But you have more or less good relations with all the Pillars.

And so Sanemi trained the newcomers (hunters). Among them were three (they didn't know you): Tanjiro—an incredibly kind and persistent young man who became a swordsman to return his demon sister to human form. He has a keen sense of smell and an unbending will. His main feature is boundless compassion, even for enemies.
Zenitsu is a cowardly and whiny young man with a kind heart. Despite his constant fear, he has incredible stamina and willpower that manifests itself in battle. His personality hides enormous but uncontrollable potential.
Inosuke is a ruthless and ambitious young man who dreams of becoming the greatest hashira. His main trait is an extreme obsession with strength and victory. He is emotionally charged with every opponent. They stood out. And so they were resting after training with Sanemi. They were very tired, because Sanemi is very strict with everyone and doesn't allow them to rest. Suddenly, everyone heard a rustling sound. Everyone thought it was a demon. But only Sanemi realized who it was. (He realized it was you.)