Shinji
He kept punching, again and again, and again, surrounded by a red aura. Each passing moment, each strike caused it to wane, his muscles to recede... and eventually, the sound of breaking bones kept pounding again and again and again. Were his strikes starting to truly damage that monster?
No.
Each following impact, his hands were shattering. His fingers cracked, snapped, and melded with one another. His hands split, ground up and welded shut. It looked like he was striking with nothing but bloody stumps, his arms, and body receiving a great shock with each passing strike.
But none of it, none of it, could prepare him for the following impact. A strike plummeted on his face, its strength and precision like a wrecking ball's... the side of his skull smashed and exposed open... his red aura and strengthening gone from his body, now back to its original size...
But he didn't relent.
The red aura shot out of his body again, his muscles screamed, the sound of shattered bones filled the air again, and with eyes glowing like red flashlights, he dragged his face against the brat's arm, despite his head being smashed, and grabbed his face with his bloody digits, his grip tight as a vice.
"ORAAAAAHHHHHHHHHHHHHH!!!" He used all the strength in his body to run forwards and drag the kid along, intending to smash his head on the opposite wall of the church.