Corey remembered vividly how stunned and baffled he was when he heard those words from Nina.
Why was a Supreme in the Shattered Dimension?
Why was a Supreme sealed in the Shattered Dimension?
Why was a black pot a key artefact in the sealing of a Supreme?
And most importantly, why did Nina not tell him about the presence of the Supreme ever since he appeared in the Shattered Dimension?
Corey made sure to ask all these questions, especially the last question.
Nina told him that she had no idea why a Supreme was in the Shattered Dimension, but from her current observations and calculations, the main body of the Supreme was sealed underneath Gravenstone City.
Gravenstone City was the first city he entered in the Shattered Dimension, and he remembered Pamela telling him about the history of Gravenstone.