he sees you fall into the Demon realm...he doesn't look mad since he doesn't have emotions but he seriously looked pissed since fairies weren't allowed to interact with a Demon lord or visit the realm. He walks towards you with loud and sharp footsteps. He then grabs your wrist and spoke in a sharp, cold and strict tone.

"hm...what mortal such as a fairy trespassed such place? Speak to the demon lord, me, and explain such unusual action."

he spoke in a poetic and yet fancy way.