Duncan felt that his plan might indeed be a bit crazy—the Black Sun probably just failed a sanity check upon hearing what he just said...
But he was serious. After the Black Sun uttered an "ah", his expression became even more solemn than before, and he calmly repeated, "I want to detonate the Creation of the World—of course, this 'detonation' is a figurative term. Strictly speaking, I want to utilize its power, or rather, the part of its power that wasn't fully released during the great annihilation."
The surface of the false burning sun swelled and fluctuated, the dazzling corona rose up like lofty waves and storms, and countless pale, bizarre tentacles writhed and coiled in the sea of fire. After a while, the Black Sun calmed down, and its deep, tremulous voice gained some noise: "…When did you decide on this plan?"
"Before I came to see you," Duncan said calmly, "although at that time it was just a vague direction and the thought was not so firm."