Reaper went down to the Nether realm where he had left Hades. There was a shield made of dark energy around him which prevented him from leaving that place and going anywhere else. There was blood on his clothes though he was dressed in black, it was still noticeable.
The Blood was his. Reaper hadn't done anything to him to read out so much blood. It was due to the many times that he tried to escape from Reaper's force field that he was injured. The harder he tried to break it, the stronger the rebound and he foolishly tried that out many times.
"Death," he called the moment Reaper appeared inside the cave with his hand behind his back. "You can't do this to me, you need me," he said, throwing a punch, still trying to crack the shield. He was thrown back and coughed out blood. Because the fact that he wanted to get away from Reaper as soon as possible, he enjoyed the pain, it made him feel alive, and this was something that not many could make him feel.