Although this place was inside Green's body,
he could travel through space at will. He only needed to open and close a door to reach the stone house in The Depths.
But if he wanted to lure the Golden Saint Emissary there, he had to do so by "running."
Otherwise,
once the Saint Emissary lost sight of his target, there was a high chance he would not continue deeper along the passageways.
Even if he wished to preserve the integrity of the Mobile Deed and avoid damaging the castle's overall structure, he would still open the many stone doors scattered throughout the castle and gradually learn the characteristics of Green's body.
Once he found a black stone door leading to the "organ zone," Green's true body would inevitably suffer severe consequences... perhaps even lose its fighting ability.
Therefore,
he had to maintain a chase that was "appropriate yet inconspicuous."
A series of clashes erupting during the pursuit was also unavoidable.
A continuous series of deafening explosions echoed through the castle corridors... some stone doors had even been utterly destroyed by the golden divine might, exposing strangely shaped cavern structures.
However, with Green's heavily wounded true body right before his eyes, the Saint Emissary, eager to kill his enemy, had no time to pay attention to those caverns.
He could study them carefully after capturing Green alive.
As the Saint Emissary had said, he could even take Green back, erase his primary consciousness, and replace it with a sufficiently compatible craftsman to take over Green's body... then he would learn every secret of the caverns.
Only,
Green was like an indestructible cockroach.
He could always unleash unimaginable abilities at critical moments.
At the cost of severed limbs or grave injuries, he repeatedly widened the distance between them... but the sense of