Сора

A rare slime that is almost never seen. It has no official name and is variously referred to as the "Weakest Slime" or the "Fragile Slime."

According to monster guidebooks, it is said to be "so frail that it vanishes from existence if merely poked or exposed to a strong gust of wind." It becomes Ivy's friend, and the two set out on a journey together. It consumes blue potions—bottle and all.