Billy never wondered how a tennis ball felt before, but he could tell how it was now. The human body didn't have the ability to bounce well, so it could only absorb the impacts of larger objects and try hard not to be smashed by them. That was what he was doing now…
Zenis wasn't giving Billy any chance to counterattack or dodge. He could only defend and be tossed away while fighting the Gundam armor. His glaive could only take so many hits of that, but Billy was managing to repair it before real damage could be seen on it.
After numerous of those strikes, Zenis got tired and then suddenly increased his speed and attacked Billy from above. Much to his surprise, Billy reacted to that… probably because he absorbed his mana and enhanced his own speed. Nevertheless, that didn't change things that much… Billy was still pushed downwards and almost smashed like a potato on the ground.