Slayer: Look directly at the Seraph, standing on the sun

Chapter 691 Tsunade-sama!

Tsunade remained oblivious to Zhang Hai, her gaze fixed intently on the liquid in the petri dish, stirring it continuously with the glass rod in her hand. Her entire being was absorbed in the development of the poison, as if everything outside was irrelevant to her.

Seeing Tsunade's unwavering determination, Zhang Hai felt a sense of admiration. He knew that although Tsunade had a fiery temper, her talent and perseverance in medical ninjutsu were absolutely top-notch in Konoha.

Just then, a loud "bang" rang out, and a glass bottle filled with green liquid on the lab table suddenly exploded! A large amount of thick green toxic mist gushed out of the bottle, instantly filling the entire laboratory.

Both Zhang Hai and Tsunade were affected by this sudden turn of events. Zhang Hai reacted quickly, immediately activating a defensive stance and using chakra to protect his mouth and nose, but he still inhaled some of the poisonous mist.

Tsunade was completely unprepared; she was closest to the explosion point, and a large amount of poisonous fog instantly enveloped her. She coughed violently a few times, her face turned pale instantly, and her body swayed.

"Lady Tsunade!" Zhang Hai exclaimed and rushed forward to support Tsunade.

Tsunade waved her hand, indicating that Zhang Hai didn't need to worry. A forced smile appeared on her face, but her eyes became somewhat unfocused.

"Cough cough... What a blunder..." Tsunade gave a bitter laugh. Her body began to weaken, her legs went weak, and she almost collapsed to the ground.

Zhang Hai supported Tsunade, feeling the disorder in her chakra and the rapid loss of her life force, and his heart sank. He knew that this poisonous fog was no ordinary matter.

Tsunade leaned against Zhang Hai's chest, her breathing becoming rapid and shallow. Her gaze swept over the various poisons in the laboratory, a hint of self-mockery flashing in her eyes.

“Zhang Hai…I might have gone too far this time…” Tsunade said weakly, her consciousness beginning to fade. “I just…accidentally inhaled the poison of the salamander, the venom of the banded krait…and…the toxin of the Death Worm…”

Zhang Hai's pupils constricted sharply. Salamander venom, banded krait venom, and the venom of the Death Worm! Each of these three toxins was deadly enough, let alone when mixed together!

"These three toxins... will completely destroy my bodily functions within five hours..." Tsunade's voice grew softer and softer, her eyelids began to droop, and she seemed about to fall asleep at any moment.

She suddenly looked up, a glint of cunning and challenge in her eyes. "Zhang Hai... I'll make a bet with you... I bet you can... create the antidote within five hours..."

After saying that, Tsunade closed her eyes and fell into a deep coma. Her body slumped softly into Zhang Hai's arms, her breathing so weak it was almost inaudible.

The situation inside the laboratory instantly reversed completely. Tsunade, who had been aloof and domineering, was now unconscious and hanging by a thread. Zhang Hai, who had always been "exploited" by Tsunade, had now become the only hope to save her life.

Looking at the unconscious Tsunade in his arms, then at the scattered poison data on the table, Zhang Hai felt a chill run down his spine. He was forced to create an antidote for Tsunade, and what he had to do was extract a completely new toxin from three deadly poisons, and then create an antidote based on this new toxin. This was an absolutely hellish level of difficulty!

He carefully placed Tsunade on the hospital bed beside him, then rushed to the lab table and began meticulously examining the notes Tsunade had left behind, searching for clues to the antidote. His eyes were filled with anxiety and gravity. This was a race against death, and he had to win!

Zhang Hai flipped through Tsunade's densely packed notebook, each page recording the properties, components, and antidotes of various poisons. As he consulted the notes, he quickly experimented on the lab table. He knew that mixing these three toxins would mutate their effects, rendering ordinary antidotes ineffective. He needed to extract a completely new toxin from these three, and then create a unique antidote specifically targeting this new toxin.

This is an extremely complex process. He first needs to analyze the components of the toxins from the salamander, the banded krait, and the death worm, identify their commonalities, and then deduce the direction of mutation after they are mixed. This requires extremely profound knowledge of toxicology and precise judgment.

On his first attempt, the liquid he extracted had an eerie blue color, completely different from the color of the antidote described in his notes. He knew he had failed. On his second attempt, he made a mistake in the proportions again, almost causing a small explosion. The third, the fourth… he failed repeatedly, but each failure gave him a deeper understanding of the properties of these toxins.

Sweat soaked his forehead as his fingers flew between the various reagent bottles, their movements lightning fast. His mind raced, combining the knowledge in Tsunade's notes with his own practical experience. Time ticked by, and Tsunade's complexion grew increasingly grim; the dark aura around her face intensified, and her breathing became weaker and weaker.

"Just a little bit more...just a little bit more..." Zhang Hai muttered to himself, his eyes bloodshot, but he still didn't stop what he was doing. He knew that he had figured out the reasons why several of the medicines had failed.

Finally, after numerous attempts, a glint of light flashed in his eyes. He mixed several refined essences together, then carefully added a drop of a special secretion extracted from the body of the Death Worm.

"Zizi..."

The liquid boiled instantly, then quickly solidified, forming a gray pill. The pill emitted a faint medicinal fragrance and contained a powerful life force.

"Success!" Zhang Hai was overjoyed. He knew that this was the antidote he had painstakingly created!

He didn't even bother wiping the sweat from his forehead before rushing to Tsunade's side. At this moment, Tsunade's face was covered with a thick layer of black aura, her eyes were tightly closed, her brows were furrowed, and her body was twitching slightly; her condition was extremely critical.

Zhang Hai pried open Tsunade's mouth and placed the gray pill near her lips. However, Tsunade was already in a deep coma and unable to swallow.

"Lady Tsunade! Wake up! Take your medicine!" Zhang Hai shouted anxiously, but he knew that words were useless in this situation.

He reached out to check if Tsunade still had a heartbeat, to confirm her vital signs. However, just as his fingers were about to touch Tsunade's neck, she suddenly opened her eyes!

Her eyes held a hint of confusion, a hint of cunning, and a suppressed rage. "You... what do you want?" Her voice was weak, but full of threat.