Rebirth in One Piece as Deputy Captain - Chapter 66

In this world, orphans or just anyone without any hope for this world can apply to become a “walking target”. Their sole purpose is to be a practicing dummy for the students of the sect who train to become “Demon Hunters”. These students need “walking targets” to test their training on living, walking beings of flesh and blood.
In exchange, they will be provided with food & shelter.
Their existence value is lower than a slave, but if they manage to survive a few years they can receive a life long pension.

Xiao Han is such a “walking target”. One time he witnessed a powerful Demon Hunter disposing a demon. When the demon died, a fragment of the demon that managed to escape entered Xiao Han’s heart. No one saw that, and even Xiao Han himself only felt some discomfort for an instant.

But that thing in his heart soon gave Xiao Han visions, and the first one is of a cultivation method which allows Xiao Han to absorb damage to enhance his body. A perfect cultivation method for a “walking target”.

- Description from Novelupdates

My crew? Yeah... it's a little special.First Division: Night Raid from the Akame Ga Kill.Second Division: The Akatsuki, led by Pain, from the Naruto world.Third Division: The Seven Deadly Sins.Naval Headquarters:“Everyone, be on high alert. That man... he's coming.”Four Emperors:“Sh*t, who the hell provoked him this time?!”“Someone get ready to apologize. I’ll go in person if I have to...”The Dragon Hunting Pirates — a name that makes the entire world tremble!

Traveling to the world of Xianxia, ​​Shen Ping practiced like walking on thin ice for more than 20 years, but he didn’t have a golden finger. With his ordinary aptitude, his progress in cultivation was slow.

It wasn’t until I planned to lie down completely and married a wife that I was shocked to find that the way I opened the world of Xianxia was a bit wrong!

PS: The 10,000-order masterpieces “Warrior of a Perfect World” and “Swallowing the Starry Sky Signed in for 30,000 Years” have been completed

- Description from novelbuddy

Julian, the son of Duke Alden and the grandson of Grand Duke Augustus stood Infront of the crystalline ball that emanated mana.The crystal absorbed his mana and started glowing with purplish hue, with a sparks of lightning.“Yes, I have unlocked Lightning Affinity,” Julian said, a spark of excitement lighting up his blue eyes.Suddenly, the ball began absorbing too much mana, Julian's eyes widened in horror as the energy swirled out of control, crackling with an intensity that was and terrifying. Just as he realized the danger, the ball erupted in a blinding flash, a shockwave of power surging outward.Julian wasn't hurt, but he felt a strange sensation as a dark mist swirled in front of him. Suddenly, he saw a strange entity, a shadowy figure, slip into his forehead.Then, Julian heard an unfamiliar sound echo in his head:“WELCOME TO THE MILF SYSTEM.”Connecting....SuccessInitializing.......Success“FUCK THE MILFS AND GET STRONGER, CONQUER THE MILFS, CONQUER THE WORLD.” , The voice saidCuriosity piqued, Julian quickly asked, “Can you tell me more about the MILF SYSTEM?”The voice continued, ”Sure, The MILF SYSTEM will help you reach unimaginable power as a mage. You will need to complete the tasks assigned to you and earn points.“