The Killer Among Killers (One Piece x reader)

A killer but not just any killer. Y/n L/n, infamously known as the Grim Reaper, is no ordinary criminal. When a sudden and mysterious ambush shakes the foundations of Impel Down, the infamous underwater prison, Y/n is brought in-not as a prisoner, but as an undercover investigator.

Tasked with unraveling the truth behind the chaos, Y/n must navigate a world filled with ruthless mafia leaders, deranged serial killers, and power-hungry prisoners, all while maintaining their cover. Justice isn't easy in a place where the rules are as twisted as the people who enforce them.

With enemies at every corner and alliances that are as fragile as glass, Y/n's mission becomes a delicate balancing act between survival and justice. In a prison where madness reigns supreme, Y/n will have to prove why the Grim Reaper is a name that criminals fear and respect.

But Impel Down is no ordinary prison, and the deeper Y/n digs, the more dangerous secrets begin to surface.

Justice doesn't come easy, especially in a place like this.

Character I mostly focused shipped with(intimate):
-Zoro
-Ace
-Smoker
-Trafalgar Law
-Kidd
-Killer
-Crocodile
-X Drake
-Mihawk
-Shanks
-Benn Beckman
-Lucci
-Akainu(ish)
-Paulie
-Iceberg
-Katakuri

Note: It will be a poly-relationship and might have smut chapter