Is he wearing an Artifact?

The atmosphere around the Tower became heavy and only loud breathing sounds could be heard.

Vice Principal George gritted his teeth and glared at the four old individuals floating in the sky.

Their gaze was fixed on Kyle and Bia. One of the floating individuals suddenly frowned and looked at the others.

"Except for rank I can't sense anything else from the bird's body but even the rank is surprising. It's (D+)-Rank!"

The person floating next to him wore a neutral expression. He was an elf with long white hair and beard. There was a subtle shock within his nonchalant eyes when he sensed that the bird was (D+)-Rank but it disappeared within a second. 

"I can't as well. I can understand that the bird is special but why can't I see through the kid's body?"

He whispered and gazed at the other two people floating beside him. Seeing their serious expressions, he was sure they were also not able to sense anything from the kid and bird's bodies.