Rui did his very best to exploit the flaws and shortcomings in the VOID algorithm. Exchange after exchange, he abused them to the best he could. The disadvantage he had accumulated prior was slowly starting to get mitigated.
The biggest problem was that his shadow clone self didn't really seem to be capable of taking damage. Even if Rui pounded it with a barrage of powerful attacks, it would get up, walk it off and continue as if nothing happened. Whereas any damage Rui took didn't magically disappear, he retained all of it. Even if his new tactic allowed him to outplay his opponent, the lack of damage and fatigue on his opponent's part meant that none of it ever stuck.
Rui had to work harder and harder each time he wanted to overwhelm his opponent.
But what did it matter? His opponent simply got back up and continued fighting with the same ferocity as before. Rui's combat kept getting duller and duller.
It only snowballed even further as time passed.
BOOM!!