C687 Azure Dragons Nest

Suddenly, Lloyd heard a small sound in the air.

Even with his hearing, this sound could be ignored.

"What's that?"

Ellen's hearing was obviously sharper.

"I don't know, but this should be the cause of the death of the giant beasts."

Lloyd said in a low voice.

The two of them gathered their gazes and looked in the direction of the sound.

The sound got louder and louder