Hypersonic

A shrill in the cave!

Ye Chong could feel his head pounding. Boom! A force came after, breaking his shaking stance. Thup! He was lifted by the violent wind and slammed upon the rocky wall behind. He could hear his backbones cracking and his insides were rumbling. Splash! He spat a pool of blood as he landed on the ground.

That slam had woken Ye Chong, as he discovered the waves coming from the dark disc. He looked at Mu, whose legs were dragged behind, forming a trail. The artificial intelligence had its eyes frantically flickering which meant he was clearly fighting against this force.

Ye Chong stumbled upon the sight, where Mu was at the edge of defeat, the first time it was. And the foe was merely using sound to fight…

The strong sonic waves wrecked the surrounding atmosphere. The fright and its overwhelming strength put upon Ye Chong was no longer imaginable.