Chapter 600: The Farm planet last chance

"The seventh wave... when do you think it will be?" Robin looked down for a moment, then nodded and asked

The demon shook his head, "We don't know. Sometimes the waves occurred within just two months and sometimes a year, and in between there were smaller waves to kill a number of our families and then withdrew, so the Demon Kings were always present at the headquarters to confront them at any time. Even Aro and Flora still stealthily attack from time to time, so Brother Sakaar and Brother Amon stand guard all the time. Even I had to be with them, as we do not know when the seventh wave will begin and how many Emperors will be in it."

"Amon also entered the Martial Emperor's Realm?!" Happiness was evident on Robin's face