It was a threshold, the flesh was about to welcome a new evolution.
Boom...
Casio's ears buzzed as though struck by a hammer. His entire body rapidly expanded, instantly mutating from a normal human form to a fearsome demon idol state. In the corner of the secret room, a dark, colossal iron tower was squeezed, occupying nearly one-quarter of the area.
Every breath from his nostrils was more turbulent than the blasts of an elephant.
Crack, crack, crack...
His whole skeleton shook thunderously as if an inexplicable force descended from the void, compressing every inch of osseous material and flesh. At the moment when his progress in the magic puppet secret art reached eighty percent, Casio experienced indescribable pain. It was as if thousands of hammers were striking, intent on smashing every muscle, vessel, and bone to smithereens, and then forging them into something even tougher.