The realm of mortals had a much weaker amount of mana or any kind of strength than in my demonic domain. So, the number of mages and warriors in this realm is something the creator of this world should be ashamed of.
However, the elemental and attributive nature of mana particles that existed in this realm was similar to my demonic domain, or hell if mortals might call it. I doubt every human or other race in this plane could see all nine of the elements, but at least with this, I can claim myself back at being the absolute chaos.
While I was thinking that and smashing each monster that came in our way, seeing my pitiful power, I used, Bran stared at me in awe, his earlier skepticism replaced by newfound respect. "Alright. You aren't weak? Sir, are you even my friend Lucas from before?"
"Sighs" I sighed in confusion about what I should say to this mere human. After all, even I was a demon and destruction-bringer, I wouldn't want this guy to know that 'The demon king is incarnated to this Lucas kid, blah blah blah!' to any other humans outside of this dungeon with my current level of strength. Sure, I may be strong enough to make a Balsik submit to me, but I doubt I can just kill a dragon with my current power.
I couldn't shake off the feeling that this encounter was more than a mere twist of fate. Something happened within the cosmos when I opened this dimension with a crack, and I was overwhelmed by something or someone to split my true body into my ethereal form.
Whoever or whatever bastard who did that to me, now that I've returned with the potential to become just as or even more powerful, I was determined to use this opportunity to my advantage.
The orcs, momentarily disoriented by my display of power, regrouped and resumed their assault. It was a relentless onslaught, and with each passing moment, I felt my connection to the abyssal depths strengthening as I kept using my mana. The dormant demonic energy within me stirred, seeking an outlet for its release.
In the midst of the chaos, I realized that if I were to survive and regain my true form, I just needed to exploit the vulnerabilities of this mortal world and get stronger. The humans accompanying me would be mere pawns, but for now, they served a purpose in my quest for supremacy.
With a sinister grin, I muttered to myself, "Let the games begin."
We carved our way through the dungeon, and I obliterated all the small fries that came our way. I could feel the pulsating energy of the abyss growing stronger within this mortal vessel.
It hungered for release, a return to its malevolent form that once wreaked havoc across dimensions.
Bran, still bewildered by the sudden turn of events, fought valiantly beside me. "Okay, now this is really weird, man. Lucas, what the hell is happening?" Bran shouted over the cacophony of battle.
I chuckled, a tone laced with demonic resonance. "Nothing in your feeble human understanding, Bran. Just consider it a change of plans."
"Huma-what? You are going overboard with this chunibyo stuff, man! Cut it out!" He said with a wry expression while slicing through a magical monster which was hiding due to my presence.
As we pressed forward, the monsters' resistance intensified. The air crackled with magical energy, and I could sense a disturbance—a formidable presence approaching. It seemed my arrival in this realm had attracted the attention of otherworldly forces.
"Well well! What do we have here! The demonic energy is just as pure as I want. Now this is getting interesting."
A colossal figure emerged from the chaos, an elderly Lich wielding powers that resonated with the dungeon. His hollow eyes bore into mine, a shiver from its spine, and bowed respect from its heart, just by recognizing the dormant malevolence and my demonic aura that now inhabited me, now as Lucas.
"..." the sorcerer hissed, his voice a sinister melody with something I wasn't able to understand.
"Seems like fun. I'm hungry now!" I said to myself as I burst out my deathly aura, making Bran fall to his knees and cough out blood.
"LU-ca"
Enveloping Bran within an invisible barrier, I walked straight towards the Lich, reveling in the acknowledgment of my true identity. "In a form more fragile than I'd prefer, but I shall reclaim my power nonetheless."
The Lich, unleashing dark incantations that summoned shadowy minions to his side.
"Seems like he is a necromancer. Well, I will soon devour that skill of yours too, my slave!" The battlefield became a nexus of magical clashes as the abyss within me yearned for liberation.
"Lucas, what are you? What's going on?" Bran demanded, his confusion growing inside the barrier.
I turned to him, my eyes ablaze with demonic intensity and a sinister-happy grin. "Hahah! Whatever do you mean? I'm just little ol' Lucas, and this realm shall bow before my might. Haha!"
"Eh?"
Seems like I reacted too much for a bit there.
With those words, I unleashed the suppressed energy within, allowing the abyssal forces to surge through me. The air warped, shadows coalesced, and the very fabric of reality quivered. The elderly Lich's eyes widened in dread as he witnessed the awakening of a malevolence he thought vanquished.
"Bow before and offer yourself, you imbecile minion. May your bones rot in my blaze!"
I royally said as dark tendrils emanated from my being, entwining with the magical energies of the abyss, manifesting a dark cube with demonic aura. The transformation began—an ascension from the feeble form of mine, as I enveloped my darkness, and I could feel my hell-fire burning out from my dark eyes and the blond hair turning black due to my darkness. The black-cube I manifested in my hand, started to transform into a sword, created totally with the dark elemental flow of mine.
"Good god of Heavens!" Bran watched in awe and relived-terror as the once-mortal vessel underwent a metamorphosis, becoming the harbinger of chaos and desolation, a true demon blood awakened within this human bloodline.
The battlefield became a theater of cosmic malevolence, and the games truly began.