'…my reality.'
Theo had a small smile on his face as if he had just felt enlightened. He had recognized his own power.
Right before he was recognized by the world to wield the Reality Order, Theo once said, 'No one can tell whether the world you have been living in is an illusion or not. You only know and believe that this world is real. And you or even this planet might be just an illusion of mine. Even Order and Authority might just be the image planted in our minds. Seek the truth of this world…'
He couldn't finish the sentence back then because the world had recognized him and given him the Order at that time. But he could finally complete the answer.
Just like when he was in Helheim and challenged the test to revive his body, he declared to the world.