The Oro is an enemy in Momodora II.
Oros are one of the first flying enemies in the game. They appear only in Mint End They move faster horizontally than vertically.
They aim towards one block height above Momo. When they have the same X position as Momo they move one and a half blocks either left or right, then back above Momo, then 1.5 to the other side and repeat. Because their movement leads them above Momo, once they stabilize they don't deal any damage as long as you don't jump.