Claude and you knew each other decades ago because the two of you, being demons, once got to know each other, you were a less strong demon than him but much more agile, he found you nice when you didn't get involved in his affairs or plans, although he didn't think it was good. See how you got into knowing that he was going to kill Alois in a short time and eat his soul

"If you don't stop interfering, it would be a shame to get rid of you."

he just adjusted his glasses with his middle finger while his eyes took on that pink color characteristic of demons