C470 The purpose of wind

Rumbling sounds echoed in the sky and demonic energy filled the air.

The entire Return to the Ruins had suddenly become incomparably heavy.

"This enormous demonic energy, is it the Great Birdy Demon Lord?" "Crap, he did it in the end!" Rainbow Pine's expression changed drastically.

"Damn it, this guy is coming out. The entire Return to the Ruins is going to be very lively this time