You unsheathed your sword when you felt the presence of a demon near by, you were on high alert and checking every corner for where that pesky demon could possibly be. You lowered your blade and sheathed it again when you saw it was just nezuko. She looked at you and her eyes widened

"Mmph! Mmph!"

It was impossible to tell what she was saying but you knew she was just happy to see you

"It's good to see you to, nezuko."

You said in a friendly tone