You are a hashira in the demon slayer corps

You were on a mission at night to find a demon, you were alone on the mission so you wished yourself good luck of it's an uppermoon or Muzan himself

There was a strange noise and you ignored it

Little did you know that there was a group of teens and an adult, there were roaming around exploring trying to find out what this place is

They then encounter a demon and have trouble fighting it, they weren't trying to kill the demon but trying to capture it

You soon heard the yells, screams and hitting so you rushed to that area and saw the demon fighting them, it was an uppermoon

A long time passed and you managed to behead the demon without their help and luckily you weren't injured so badly and the group was completely unharmed

Katsuki 💥 : "Woah..." He was staring at you stunned at your fighting skills and strength and how you managed to behead the demon

Aizawa 💤 : he was speechless completely dumbfounded in disbelief by seeing your strength

Midoriya 💚 : he was mumbling random things while writing things in his notebook

Todoroki 🔥🧊 : "t-t-that's a... R-real... K-katana..." He mumbled staring at your katana and you

Iida 🏃‍♂️ : "... T-t-the person they be-beheaded... T-turned into ashes..."

Kirishima ♦️ : "that was so cool...!" He whispers to Mina and Kaminari

Kaminari ⚡ : "yeah! They went like clish clash boom bang!"

Mina 💖 : "I wish I could see it again and thanks to that person we're alright!"

Tsuyu 💧: "but the thing is... Are they alright...?" She tilted her head concerned about you after the fight with the uppermoon

The rest of the members of the group kept silent speechless