It wasn't that Rui wasn't aware of this shortcoming, he was shrewd enough to realize that a dynamic defense that relies on palm interception is held back by the fact that he has only two palms. Arms were part of the upper body, which meant intercepting powerful torque-empowered strikes to the body below the waist took a greater amount of time and energy, and had a larger margin for error.
Furthermore, if the one launching the attacks was someone with as much of a relentless dynamic and flexible offense as that of his opponent, there was no doubt going to be several opportunities that his opponent could probably exploit to land strikes against him.
This was one of those instances.
"Heh," A wild grin covered his mouth as he launched himself toward Rui, oozing an aggressive savage aura. The success had given him great confidence that he could eventually completely crack Rui's strangely effective defense. He threw a wild attack at Rui, yet to his surprise
BAM!!