I traveled through hundreds of worlds at once

"He was able to fight with Kusanagi for such a long time before using the killing wave. He has made great progress in the past few months!" Goenitz, standing at the entrance of the gymnasium, looked at the dark red steam on Yihui on the ring with interest.

"He has made great progress indeed! I was surprised when I learned that he had made a breakthrough some time ago!" Mai Zhuo agreed, and suddenly changed the subject, looking at the thick dark red steam around Yihui and said with regret, "But the kid is making too slow progress in the killing wave!"

"Well! There is still a big gap compared to the masters of killing wave in the past!" Goenitz remembered