"What the hell is it doing?!" Jack asked Peniel.
"I don't know! That must be one of its unknown skills," Peniel answered.
The shuddering did not get any less. Whatever, the beast was preparing, it was nothing simple.
"Move back! Move back!" Jack called out to Samuel. He himself walked away, putting more distance from the Ice Demon Spawn while drinking a healing potion. His sword's Overlimit state had ended already, Storm Breaker reverted to its original shape. He guessed his sword damage should now be less than Samuel's.
Throughout the noise following the shuddering, Jack realized it was not just the sound of the cave quivering. He looked back and saw the row of icicle walls were shivering greatly. The icicles were hitting each other from the shaking and producing clinking sounds.