The Stream of Blood
There were many things that Josh had always taken for granted: his heart thumping rhythmically, his lungs drawing in the air around him, but most especially everything that happened on the microscopic level in his body.
After all, people would go insane if they were to feel their nails growing, their skin dying, or even their white cells struggling to protect them. Doctors were able to explain every process in exquisite detail, but knowing was different than controlling.
This control was what Josh was aiming for. He had to master formless mana that humans weren't meant to sense. So many times, he felt his struggles were only leading to a dead end. But every time he looked at her, his resolve strengthened.
Well, what remained of her. She was nothing more than a gory and depressing mirage. Still, it gave him the courage to keep trying to break through his limits.