Solution - Slime Scaling lol

“Still, Herohero-san, how did you come to have human eyesight?”

Herohero was a slime. Slimes used a sort of motion detection sense to learn about their surroundings in place of ordinary vision, so he should not have perceived the world like a human did.

“Ah, I equipped a magic item that gave me that ability. The innate motion detection ability which all slimes possess is very useful, but it’s only effective within a limited radius. I can’t see beyond 100 meters, which is pretty spooky if you ask me. I’d be in trouble if someone attacked me from outside that range, so I decided to give myself something to let me see normally.”

***

Prologue Part 2