Kapitel 253: 169 Return to Hometown (4100)_1

Lowering his arm, he subconsciously glanced at the back of his hand.

The surface of the skin was blank, not a mark from the Black Rain Villa. On his forearm, a thin black line wriggled under the skin like an earthworm, swaying back and forth with the movements of the arm.

Casio felt slightly uncomfortable in his heart, and immediately pressed down on his right forearm with his left hand. He figured it out after a careful examination.

The black line turned out to be his own blood vessel!

Not any black pattern on the skin surface, nor any kind of parasite, but his own real blood vessel.

How did it turn black?

Casio could not figure it out, he never experienced this kind of change before entering the Era of Retrospection, the blood vessels turning black happened only after he returned to the real world. Therefore, this change must have come from within the Era of Retrospection. Casio sat on the sofa thinking over and over, only radiation seemed possible to him.