Became a Failed Experimental Subject - Chapter 20: So Annoying

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When the Demons and Angels of the 99th floor detected a threat to their reign, they teamed up to topple the man who'd placed them in such a situation.

The Lord of Sins, a walking calamity of the Heaven's Spire, had put pressure on the transcendents no mortal had ever done.

However, before the Lord of Sins could revolt against their reign, the Demons and Angels decided to nip the threat in the bud.

Manipulating his clanmates, using other clans, controlling fate...

They used all powers available to them in an attempt to halt the advance of the Lord of Sins. Eventually, it worked, and the Lord of Sins fell from grace.

But it wasn't a happy ending for the vicious transcendents.

“I'll return one day, stronger than ever and as a force even you can't touch! I'll become the Lord of Sins again!”

The man returned to the past with a goal in mind.

Everything else was just an interference.

“Return of The Strongest Player” is a gripping tale of a man's ascendance. His journey back to the pinnacle of strength, the adversities blocking his path, and the comrades he eventually acknowledged.

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Renji Kurozawa was just another nobody—until he died and was reincarnated in a world of swords and magic. Summoned alongside other “Chosen Heroes,” he hoped for a second chance at life.But his gift was different. “Death Claim”—the power to steal abilities from those he kills.Betrayed by his allies and left for dead, Renji embraces his dark power. With every enemy he slays, he grows stronger, turning from a forgotten outcast into the most feared force in the kingdom.Now, hunted as a villain and pursued by gods, Renji must carve his own path—one kill at a time.If fate wants a monster, he’ll give them one.

In one moment, he was walking down the street with his little sister—In the next, he had traveled to the world of One Piece, carrying a system that could extract, record, and fuse genes to cultivate powerful lifeforms.Thus began a leisurely and carefree life in the most chaotic world imaginable.When bored, he’d snatch a bit of heavenly tribute meant for the Celestial Dragons.When curious, he’d raise a few cute kittens and bunnies just for fun.When restless, he’d wander through the territories of the most fearsome powers in the New World.Life is beautiful—so why bother taking anything seriously?

Zero, a 35-year-old mercenary, after being betrayed by one of his teammates who told his enemy about him. He chooses suicide so that he can kill his enemy and his traitor teammate. After that, he was reincarnated into the world of magic, in the body of an 18-year-old teenager with the same name as him. However, his body does not have mana or the talent for magic. But with the help of the cultivation system, he has unrivaled power in the world and has a harem of beautiful wives.