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Nidhogg's huge body fell to the ground with a bang, stirring up a cloud of dust. In the passage, the runes that originally flashed with strange red light gradually dimmed, and the humming sound also disappeared, as if everything had returned to calm. The rubble continued to fall from the top, landing on Nidhogg's huge body, making a dull sound. The smell of sulfur in the air gradually faded, replaced by a strong smell of blood.

Mark staggered back a few steps, knelt on one knee, and gasped. The golden energy shield covering him also slowly dissipated as if it had exhausted the last bit of energy. He reached out to wipe off the stains mixed with dust and sweat on his forehead, his chest heaving violently, and every breath seemed to be burning. He looked at Nidhogg's body vigilantly, with a hint of disbelief in his eyes, and mixed with a little joy.

"Really... it's over?" Mark whispered to himself, his throat dry and his voice hoarse. He stood up slowly, clenched his fists, and felt the little energy left in his body. The long and intense battle almost exhausted all his physical strength and energy.

He did not relax his vigilance immediately, but approached Nidhogg's body cautiously. He walked around the huge body, carefully observing every detail, fearing that the beast would attack again.

Nidhogg's three heads drooped weakly, and blood continued to flow from the wounds, staining the surrounding ground red. The ground of the passage was originally a blue-gray stone brick, but now it was stained with blood into a shocking dark red.

After confirming that Nidhogg was completely dead, Mark's tense nerves relaxed a little. He took a deep breath, endured the pain in his body, and began to look for the last piece of holy stone fragment on Nidhogg's body.

He first started looking from Nidhogg's three heads, pried open its huge mouth full of sharp teeth, and carefully examined the inside of the mouth and deep in the throat, but found nothing.

"Not in the head?" Mark frowned and began to check Nidhogg's torso again.

He used the black substance to form a dagger to cut open Nidhogg's hard scales, revealing the bloody flesh underneath.

A more pungent smell of blood came to his face, making him hold his breath.

He groped inside Nidhogg's body with his hands, and the cold touch made him tremble slightly.

He touched some hard bones and soft internal organs, but he still couldn't find any trace of the holy stone fragments. The light in the passage was dim, and Mark had to condense the energy on his fingertips, emitting a weak light for better observation.

As time passed, Mark became more and more anxious.

Could it be that the holy stone fragments were not here? He clearly saw that Toby used the fragments to summon Nidhogg. He was a little unwilling and continued to expand the search range.

Finally, when he touched the location of Nidhogg's heart, his fingertips touched a warm and smooth object. He was delighted and immediately pushed aside the surrounding muscles and tissues. A diamond-shaped crystal stone emitting a light blue light appeared in front of him.

"Found it!" Mark picked up the fragment of the holy stone and looked at it carefully. The fragment was warm to the touch, and the light it emitted was soft and not dazzling, resonating with his body.

"Finally... it's all gathered." He whispered, with a hint of fatigue in his tone, but also full of hope.

At the same time, in the other direction of the passage, Toby and Moloch, who were hiding in the dark, smiled at each other when they saw Mark holding the fragment in his palm.

The final plan has finally begun!