[Layland Kleinhaus' POV]
Millonia is the Demon we have been anticipating. The Demon who possesses the Origin of Disaster and will bring the end to this world. Keeping her in check is ours doing a favor to the world. We can't just let her be, of course, because others will use her against us.
The plan that the other Demon Kings had concocted must have been visioned to end with the Verniculos Kingdom's destruction at Millonia's hands and Ilschevar's death. Ilschevar was stronger than they thought, making things head in the direction they didn't expect.
Millonia was sealed, giving Ilschevar full control over her. The weapon that they expected to be destroyed fell into Ilschevar's hands. God was forced to descend and Ilschevar managed to surprise them once again. He managed to force God to return to his throne. Surely, it wasn't without a sacrifice.
