Survival as an ant with a simulation system

For two long, grueling years, Cin sat in Impel Down's Level 6, surrounded by monsters, killers, and the worst criminals in history.

But he did not waste this time.

He trained. He evolved. He mastered everything.

Even with Seastone shackles, Cin pushed his body to adapt, developing ways to fight even under extreme limitations. He forced his Haki to new heights, clashed against the strongest prisoners, and became the apex predator of Level 6.

Now, his moment had finally come.

Race: Abyssal Predator – Apex Form

Size: 4m (Still condensed, true size unknown)

Threat Level: Beyond Yonko Commander

Haki Mastery:

Conqueror's Haki (Peak): Can split the sky with his will alone.Observation Haki (Future Sight): Can see several seconds ahead with perfect clarity.Armament Haki (Internal Destruction): Can bypass defenses and destroy enemies from within.

Abilities Unlocked:

Predator's Domain: An evolved version of Conqueror's Haki, allowing him to dominate the battlefield.Abyssal Adaptation: Can evolve mid-battle to counter enemy attacks.Instant Regeneration: Can now recover from lethal injuries in minutes.

BOOOOOOM!

The entire prison shook violently as a massive explosion tore through the upper levels.

Alarms blared, prisoners screamed, and guards panicked.

Cin, sitting in the darkness of his cell, opened his glowing eyes and smirked.

"He's here."

Luffy, alongside Ivankov and Inazuma, was running through Level 6, searching for Ace's cell.

But instead, his eyes locked onto Cin, the towering predator chained in reinforced Seastone cuffs.

Luffy narrowed his eyes. "Who the hell are you?"

Cin chuckled. "I'm your way out of here."

Luffy frowned. "Tch! No time for distractions! I gotta find Ace!"

Cin leaned forward, his eyes glowing ominously. "I know exactly where Ace is."

Luffy hesitated.

Ivankov narrowed his eyes. "Straw Hat Boy, this guy... He's dangerous!"

Cin smirked. "Of course I am. But if you free me... I'll help you save your brother."

Luffy clenched his fists. He could feel the overwhelming aura coming from this being.

After a moment of thought, Luffy made his decision—

"Alright! Let's do this!"

Inazuma quickly sliced through Cin's restraints.

The moment the Seastone fell away, a monstrous wave of energy exploded outward, shaking the entire level.