The Overlord of Teyvat: Genshin Impact x Overlord crossover

Part 16

After giving orders to his undead lieutenants and putting them in their right place, Momon decided to remain in Dragonspine for a while. Accompanied by the Grim Reaper Thanatos, they ventured deeper into the Wyrmrest Valley, their path illuminated by the dim, cold light of the snow-draped landscape.

As they moved through the jagged terrain, Momon couldn't shake the feeling that something monumental lay just beyond the horizon. The mountains loomed like ancient sentinels, and the whispering winds carried echoes of past battles. Soon, they encountered a group of Fatui patrolling the area, their insignias glinting menacingly in the pale sunlight.

With a swift motion, Thanatos drew his scythe, a chilling smile creeping across his skeletal visage. "Shall we, my lord?"

"Do as you will," Momon replied, his tone calm and commanding.

In a flurry of movement, Thanatos struck, his blade slicing through the air with a ghostly precision. The Undead Berserker stood at the ready, adding to the chaos as the Fatui fell one by one, their shouts of surprise turning into desperate cries. Moments later, the clattering of armor and bodies echoed through the valley, and silence returned, punctuated only by the distant howl of the wind.

"Well, this one must have been one hell of a dragon," said Momon, observing the aftermath of the skirmish. He turned to face the horizon, where the bones of a colossal dragon loomed, half-buried in the snow. "It might have been as large as the mountain itself."

"My lord," Thanatos said, his eyes glinting with intrigue as he pointed towards a cave partially obscured by a thick blanket of snow. "That cave over there—some strange energy is pulsing from it."

Momon's gaze followed Thanatos's finger, and he nodded. "Mhm, I'm feeling it too. Let's go see what's going on in there."

They entered the cave, leaving the Berserker and the newly animated undead knights to patrol the area outside. As they stepped inside, the warmth enveloped them like a shroud, contrasting sharply with the biting cold outside. The air was thick and heavy, tinged with a faint, acrid scent.

The cave expanded into a cavernous space, illuminated by an eerie, red glow that pulsed rhythmically like a heartbeat. Momon's eyes widened as he beheld a massive organism—or perhaps a massive, glowing heart—throbbing in the center of the chamber, its surface slick and glistening. The walls around them were veined, pulsating with the same unsettling energy that emanated from the heart.

"Could this be the heart of the dragon, my lord?" Thanatos asked, his voice reverberating in the stillness.

"I don't know," Momon replied, stepping closer to the pulsating mass. "But it seems like it." He reached out, hesitantly touching the surface. A jolt of energy surged through him, and he grimaced. "Mhm, this thing is very alive... and also toxic."

"Toxic?" Thanatos echoed, concern etched into his skeletal features.

"Yes, Thanatos. This is the same abyssal infection I saw in the body of Dvalin," Momon explained, his brow furrowing. "So this dragon must be Durin, the one slain by Dvalin and Barbatos centuries ago. Strange to see his heart still alive."

Thanatos regarded the heart with a mix of awe and unease. "Are you planning to resurrect this dragon, my lord?"

Momon shook his head slowly, considering the implications. "Not for now. It's too big and could draw unwanted attention. But I want you to guard this area most diligently."

"As you wish, my Lord." Thanatos bowed his skull, the respect in his gesture palpable.

Momon stepped back, his mind racing with the possibilities. The heart pulsed steadily, an ancient power still flickering within, waiting for someone to unlock its potential. "Keep a watchful eye. If anyone approaches, I want to know immediately."