Ultimate perception, it is an ability granted to Renji by the system which abandoned the five senses in his body. It didn't rely on instincts but rather on foresight, in it's simplest meaning it was as if Renji knew how the reptile was going to attack before it even thought of it.
"Damn you!" It dashed at Renji yet again, slashing down several times at him but his body evaded every single strike with a series of acrobatics and tilting of his neck. Seizing the opportunity in every evasion, he landed a blow on the reptile each time he found an opening.
"I'm faster than him, stronger than him so how!? How is he doing this!?" It exclaimed in it's thoughts once again as it was unable to explain Renji's movement.
Finally, Renji channeled all his energy into his right fist and punched the reptile in it's face, driving it through several trees and finally into the ground creating a large cloud of dust.
"I see." He weaved a smile on his face, not only did he discover the trick behind the (Ultimate Perception), but he also figured out why his attacks were effective against the reptile. "So I can use both magic and mana?" He added only realizing this now.
He made use of both magic and mana but what he didn't realize was that every time he used his spells, he always infused mana into it because he didn't know how to control it.
"RAH!" The reptile roared rising to it's feet, just by it's roar alone all the rubbles and fallen trees around it exploded into nothingness by the pressure of it's mana.
It gasped slowly trying to catch it's breath, it had lived for thousands of years but not once has it ever been pressured by lower beings, at least that's what it referred humans to.
"I-impossible, how is a mere human able to push me this far!?" It bellowed with it's thoughts, staring down furiously at Renji. "What?" It calmed down a bit after noticing something slightly different about Renji, his aura had changed.
"I-it can't be... Is that, mana?" It could sense Renji's mana now because it circulated all round his body. The (Ultimate Perception) was a divine ability, theoretically impossible for someone who didn't possess mana to use.
"I understand now, I refused to believe a mere human could possess mana and tried finding another alternative for how you took down my Lamias. But now that I've finally sensed it." The reptile grinned softly, folding it's claws into a fist. "This is getting interesting, I'll acknowledge you as a worthy foe and fight you with my all!" It added.
"Divine Ascendency: Imperial Dragon Mode." It said softly as a bright light engulfed it's entire body. A light so bright and powerful that it dispersed the fog that enclosed the entire village instantly, Renji covered his eyes with his right arm to prevent instant damage to his eyes.
As the light died down, a huge golden dragon with a long spiky tail and broad wings stood in his midst. It's fangs longer than a building and it's scales made it impossible for any magic to penetrate, it's mana level completely exploded off the charts to the extent even the planet itself trembled to it's power giving rise to a global panic.
"I am the fourth Imperial general of the dragon order, Shelia Mendane." The dragon now revealed to be a female spoke in a thunderous voice that caused several earthquakes in nearby lands. By revealing her name she acknowledged his skills, knowing fully well she couldn't beat him without resorting to this.
"W-what the hell.." Renji fell to his butt in fear, what he stared at was something no normal human could comprehend. A sixty five foot tall dragon powerful enough to destroy the planet with a single blow, however it was prohibited from doing such.
He shook his head trying to erase the fear that clouded his judgement. "I see." He said rising to his feet. "So the concept of divine beings aren't as mythical as I thought, if that's the case then angels and gods do exist don't they? Then let me ask this, who asked you to retrieve the Sphere?" He said interrogating the dragon.
Shelia became instantly infuriated, after using this form, to Renji and every other mortal she would appear as a god. But he spoke of her as their servant. "You insolent mortal, what gave you the assumption that I'm not a god?"
Renji grinned softly, understanding very well that his next statement might get him killed. "If you really are a god as you claim, then I shouldn't be able to sense your mana at all. After all my mana is too low to even consider me a divine being. But if you are truly a god, then godliness is a damn joke." He said.
"Shut Up, you inferior creature!" The dragon lost it's cool, driving it's huge claws downwards at Renji.
"Alright." Utilizing his (Ultimate Perception), he leaped up into the air just before her claws could crush him along with the ground which bursted into dust. He ran up her arm with his hands floating behind his back for mobility.
She used her other arm and striked down at him and he evaded it yet again running swiftly up that arm. "Damn you!" It charged up a bright energy in it's mouth before firing it downwards at him.
"S-shit!" He exclaimed as he jumped off the dragon's arm, the blast was a high concentration of light energy which tore through the ground like a knife cutting butter.
The earth would have been done for if the Dragon didn't focus his attention fully on Renji, it would have tore right through the Earth's core if it continued.
Renji, using the energy blast and the dragon's size to his advantage made his way towards Shelia's head.
"Drakon's Claw." He said softly, summoning a weirdly shaped dagger with a purple diamond which held the Drakons venom in the middle of the hilt.
Clutching the hilt of the dagger tightly, he jumped above Sheila's head and struck the dagger down into the middle of her skull.
[Poison Effect has been activated]
"Alright!" He exclaimed with excitement, but it was quickly turned upside down as the dragon sent her massive hand towards her head.
Renji jumped down swiftly, executing a dive roll on the ground to reduce his momentum.
[The target's immunity is too strong]
[Poison Effect has been cancelled]
"What!?" He exclaimed in disbelief, but what did he expect? The Drakon's venom was less potent than Shelia's and she had resorted to using her imperial dragon mode.
"Did you think I'll be affected with that level of poison? Don't mock me, you insolent creature!"