"Why?"
"A good look at me will answer that question," Acheron spoke calmly with a smile on his face.
William took Acheron's words to heart and began to examine him in detail. Everything that had just happened had happened so quickly that he hadn't paid much attention, but now he saw something different as well.
The eyes of Acheron were just as sharp as his own. It looked like a sword, ready to be drawn at any moment. As if he could cut you if you took a step closer.
When William realized this, his eyes widened. He had seen Acheron before, but he had never thought of it this way. Now that he also had Sword Intent, he could easily see this and found the answer to his own question.