William didn't even realise when he had jumped and landed on the pedastle. His mind was refusing to work as the worry for Lilly was just growing stronger and stronger. He was trying to suppress his fear but he couldn't do that.
Lilly had changed his life and she was practically his everything now. If she was gone from his life, he didn't even know what he would do. She had become a significant part of his life, a part he wasn't willing to part with.
The thought that something might have happened to Lilly was eating his heart and making him see the worst possibility. He didn't want to accept it, he didn't want that.
That's why he just jumped and landed on the pedastle, in front of Two Transcendents who could take his life any moment they wanted. He was being reckless, he knew that but he couldn't help it. He needed to know that Lilly was safe.
William walked forward and asked, looking at Lenio and Klee, "You two know Master? Where is she? Is she fine?"