Multi-Gene

David wasn't one to waste such opportunity. Immediately, he jumped to his feet as though he wasn't even injured and descended on the still howling beast.

His stabbing was hard and forceful. And he punctured many holes on the beast as though his life depended on it.

"27!" "26!" "25!"

He only stopped when the beast finally only whimpered softly in pain.

Rushing forwards in the darkness, he touched upon the box and ad he placed his imprint on it, a soft warning light illuminated the dark atmosphere and a noise sounded from the silver box.

"Imprint not in operation, please try again 1/3." A robotic voice said. But David had expected this since he had used up all the energy in his imprint for that Ray of light and it was just for a single second but it was definitely enough to finish up the energy stored in the microchip.

"17!" "16!"

But the silver box wasn't David's goal, his goal was to illuminate the surrounding area so as to find his gadget, and the thing that had saved his life.

"14!" "13!"

He risked immediately as he took the compass, the vest had already been destroyed, there was no way he could even put it on.

Grabbing all his stuffs, he immediately found the lump of gold that was lying on the floor. It had four incredibly faint claw marks on it and if David's eyes weren't that sharp, he wouldn't even be able to see it clearly even with the soft illumination emitting from the silver loot box.

"7!" after he had grabbed his stuffs, he immediately rushed to the next lower floor.

"3!" And as he reached the passage of the hall, his eyes instantly locked onto a huge eye ball, also at the end of the hallway. The wolf king

David smirked slightly and he waved his hands "Adios!"

He immediately entered a room and swiftly jumped his way from the window while using his right hand to grab at every edge it could hold, slowing down his decent.

An angry howl tore out from the wolf King's mouth and from its anger, it actually jumped out from the window. Although, dropping from a height of twenty meters might not be enough to kill the wolf King, it would definitely be severely injured with broken bones.

David face soon darkened. The dark wolf King extended its claws outwards. Piecing its four paws deep into the walls, its slid down the walls with the help of gravity and its weights as it pursued after David.

Sparks ricochet off the walls due to the friction of its claws and the walls

'Shit! When did beasts get this smart and cunning.' David grumbled and he shouted out loud to the beast above him.

"Do not force my hand!" the beast only barked threateningly at David anger and viciousness clouding it's mind.

David descending speed was gradually decreasing. But David wasn't stupid enough to slid down to the ground.

There were still several dark wolves barking at him from the ground.

Grabbing on a hole that had been created in a wall, he swiftly swung his body inside the room and he rapidly made his way to the next room.

It seem the building was a sort of dormitory. David was now certain of it as there were several rooms in the building.

Seeing as David had entered a room, the beast followed in pursuit but it had to destroy the entire wall as it clawed its way into the room.

But at that time, David had appeared in another location, all the while struggling to climb back up to the other top floors.

He was incredibly tired in both mind and physique. He couldn't even imagine that he would last this long.

Especially when he had been injured internally. He should be resting right now but all the physical exercises he is going through was just. Increasing the injury as well as the pain.

He gritted his teeth and he breathed deeply before climbing to the next window. He was exhausted but he kept trying.

There was obviously an easy way out of the problem but since he had started on this path, he had decided to see it to the end.

Sweat drip down his forehead and he looked upwards, only to find the beast already sliding down towards him.

David's gaze darkened and he almost felt his head go blank as the headache he hated most after death came crashing down. Gritting his teeth, he jumped to the next lane to avoid the monster crushing him with its weight.

The dark wolf could only slide down in one direction, it couldn't change its displacement yet. It seems it wasn't that wise yet.

David arms suddenly stumbled as his arms gave out from sheer exhaustion, he felt his heart drop and he desperately waved his arms to hold onto something, anything but it was all in vain. Then, he sighed softly.

"So it as come to this." As though he had made a tough decision in life, David was about to remove the restriction he had placed on his heart but suddenly, he noticed something weird happening in his body.

His heart suddenly went out of his control and the lock he had placed on it was immediately broken.

The velocity at which blood flowed into his body suddenly broke free from its restraints. His heart was like a five ton hammer pounding at a metal steel as it hammered fiercely in his chest.

Thump! Thump!! Thump!!!

David felt his heart tightened forcefully and then released, as it pass blood straight into the foreign organ that had been implanted into his body.

As the red blood from his original heart entered his second heart, the organ weirdly produced a concentrated amount of mutagenic fluid which was as black as the night sky itself. 

Black liquid was procreated which then merged with his red blood instantly, turning it pure black in colour. Almost the same as the blood of a Dark haze beast at high level.

As the blood was about to emerge from the second heart, one couldn't even call it blood anymore as its atom, molecules and genetic code that made up the blood had been thoroughly transformed into something entirely different.