Explosion

Thud!

"It seemed like I have underestimated this Runic Armor of yours," "I should have used my full power at the beginning and use it to finish you off as soon as possible," he said as he landed back.

To his admission, I had just smiled. Telling him he was right would feel like gloating, so I might as well just smile and wait for his attack. 

It had been over twenty minutes since we had started fighting and I had collected a lot of data on him. With this much data on him gave me 70% confidence to win the fight.

If I had ten more minutes and he had shown his Art, that would have turned to 90% but still him giving me twenty minutes is more than I had expected; I will make do with what I have to do

"Be careful now, I am going to use my full strength," he said, and an amazing visual Phenomenon erupted around him, which made the audience gasp as it looked very beautiful.