Ian didn't immediately react to Kerraith's split soul's demand for allegiance.
At this moment, he was fully focused on perceiving the changes within himself brought by the fusion of the Spirit of the Fairy and the Unyielding Fortress Body.
In Ian's initial plans, the Pioneer of Iron aimed to achieve perfection at the Fourth Stage, requiring both the Fairy and the Unyielding Fortress to reach the Fourth Energy Level and integrate, in addition to having a specially crafted 'Voidrealm Machine God' resonate with his soul, completely achieving the fourfold perfection of 'body', 'soul', 'craft', and 'origin quality', to become an in some sense flawless super life.
But in reality, this is theoretical 'perfect progression'... In fact, if one simply wants to possess power equivalent to the traditional Sublimation Pathway's Fourth Energy Level, perfection isn't necessary, and the Pioneer of Iron can pretty much muster such power easily.
