Easy

BOOM!

The world seemed to lose its color. Fragments of spatial glass spiraled through the surroundings, each one carrying either a reflection of the world around it or a window into the world beyond it. 

It was the most ethereal sight that Ryu had ever seen and he completely forgot about his father for a moment. 

He had never seen space react like this. The push and pull between two worlds, the fragile construct that separated the two, it felt like…

'Vibrations… resonance… wavelengths… strings…'

The thought almost left Ryu's control as it sprinted down several possibilities. It all moved so fast that he thought of several possibilities before he even realized that the battle in the skies had reached a penultimate point. 

The flame that erupted didn't even seem to have a form. It was both everywhere and nowhere at once, covering everything.