After injecting the red liquid, Luo Tong's eyes were now filled with a crimson hue, his whole body had grown significantly larger than before, veins on his forehead bulging like worms, utterly monstrous!

BOOM!

At that moment, a thunderclap burst from the sky, the massive thunderous sound shook the land, the blinding silver light illuminating the previously dim sky, making the atmosphere around intensely tense!

Suddenly, a fierce wind kicked up, howling through the open shooting range, the surrounding moisture beginning to condense, signaling an imminent torrential downpour!

"Lu Yu, today I can't escape, and neither will you leave here alive!"

At this moment, Luo Tong's whole body radiated with pulses of red, like an enraged bull, as he spoke to Lu Yu, every word resonating with the powerful twitching of his muscles!

Hearing this, Lu Yu gave Luo Tong a quick once-over before speaking: "I can't leave alive? Luo Tong, do you really think you now have that kind of strength?"

"Hmph!"

Upon Lu Yu's words, Luo Tong snorted coldly and said, "After injecting this serum, my strength and reflexes have doubled. There's no way you can be a match for me now!"

As he spoke, Luo Tong clenched his fists, his gaze on Lu Yu suddenly turning cold: "Now, let me show you!"

With that, Luo Tong stamped his foot, his leg muscles bursting forth with immense power, his body shooting forward like an Arrow, launching a fierce punch towards Lu Yu!

Whoosh!

As Luo Tong's body shot forward, a gust of wind followed, his speed now at least twice as fast as it was before!

Seeing the punch hurling in, a cold gleam flickered in Lu Yu's eyes. He slightly bent his legs, then with a fierce punch, directly collided with Luo Tong's incoming strike!

Thud, thud, thud!

After the punch collided, Luo Tong staggered back five or six steps before he could steady himself, apparently at a disadvantage in the exchange!

Yet, a cold look also flashed across Lu Yu's face because his hand was now tingling as well!

Even Lu Yu had not anticipated such power in Luo Tong's punch!

"How's that, Lu Yu, can you feel it now?"

Seeing the icy Lu Yu, Luo Tong spoke calmly: "My strength isn't inferior to yours, so it's still undecided who will live and who will die!"

BOOM!

As Luo Tong finished speaking, another clap of thunder echoed through the sky, a drop of water fell, landing on Lu Yu, bringing a chilling sensation.

WHOOSH!

Soon after, a torrential downpour began, rain cascading down without any warning!

"Not inferior to my strength?"

But Lu Yu ignored the pouring rain, his body muscles twitching as he expanded slightly, coldly saying, "Who gave you that confidence!?"

Looking at Luo Tong, his eyes cold and intent, like a beast searching for prey in the storm, his gaze icy and filled with killing intent!

"Who gave me the confidence?"

Hearing Lu Yu's words, Luo Tong retorted coldly, then lunged forward towards Lu Yu while saying, "It's my strength that gives me confidence!"

Seeing Luo Tong making his move, Lu Yu responded. His eyes turned icy as he saw Luo Tong lunging at him, then his body tensed as he swung a fierce punch, landing hard on Luo Tong's left side!

BAM!

With a muffled sound, Luo Tong's left rib cracked under Lu Yu's punch!

With a successful strike, a ruthless smile appeared on Lu Yu's face, just as he was about to attack again, Luo Tong's fist came hurtling towards his face!

"What?!"

Seeing the incoming punch, a look of shock flashed in Lu Yu's eyes, he quickly raised his hands to block Luo Tong's strike!

Thud, thud, thud!

The punch landed, and Lu Yu felt a surge of power pushing him backward, making him stagger back several steps, his eyes filled with astonishment as he looked at Luo Tong.

A broken rib causes excruciating pain, pain that even trained individuals cannot endure. When ribs are broken, the resulting pain typically leads to a drastic drop in physical capability, incapacitating the person for combat!

Yet now, Luo Tong didn't lose his combat ability despite the broken rib, instead, he seemed unaffected, able to counterattack immediately!

"Surprised I could retaliate immediately, aren't you?"

Seeing Lu Yu's astonished gaze, Luo Tong coldly laughed, "Let me tell you the truth: when I injected the serum, all my pain receptors stopped responding. In other words, I don't feel pain! Unless you kill me, you have no chance of winning this fight!"

With those words, a cold glare flickered in Lu Yu's eyes!

A lack of pain means his opponent won't slow down or pause due to hurt, nullifying conventional combat techniques!

Just then, Marcus felt a chill, knowing this pain-free opponent had doubled stamina and reflexes, making instant extermination the only option!

Without pain, the opponent can disregard techniques, opting for brute force, making the situation unfavorable for Lu Yu!

"Master, should we join forces to take him down?"

With that in mind, Marcus shouted, his voice filled with inquiry!

"No need!"

Upon hearing Marcus's words, Lu Yu declared, "I'm going to kill him myself today!"

A cold determination resonated in Lu Yu's words!

"Kill me yourself?"

On hearing Lu Yu's words, Luo Tong's face showed deep ridicule, then he said, "I really want to see how you plan to kill me now."

"Then just watch!"

Hearing Luo Tong's words, Lu Yu's hand twitched, veins bulging, his fingertips turning razor-sharp, resembling a wild beast's claw at a glance!