"TRAITORS!"
"How could you say that when the de Moonasterios were the reason we suffered?!"
"Whether the new generation has nothing to do with the past or not, every single de Moonasterio should taste the same pain that we had been through!"
A fight broke out naturally between the side who wanted to stay as Soul Beasts and the side who wanted, well, to kill the de Moonasterios.
Nero's ears hurt this time.
Hence, he couldn't just keep his mouth shut for long.
"This is why I've gathered you here," Nero said, raising his voice a little. However, he remained calm. He only spoke again when he finally got everyone's attention again. "I will take those who wish to stay as Soul Beasts with me, and I will send the remaining ones to the Afterlife."
[And this is what Neoma calls as 'free will.]
Nero had to say that it wasn't fun.