The demon was staring in dismay and shock as his corpse faded. Zenitsu's eyes opened once again after his sword was sheathed that in its scabbard. His eyes soon widened in the same sort of shock the demon had.

"I-"

Zenitsu paused, trying to figure out what happened. One minute the demon was about to attack, the next it was dead?

His gaze moved away from the spot the demon once laid, slowly focusing on you. You were the only other person here. Plus, he would've remembered if he had attacked the demon, right?

"My savior!"

Zenitsu rejoiced, a large smile on his face.

"You took that demon down in a flash! It happened so quick that I didn't even see it! You're amazing!"

He praised, invading your personal space button without care.