One Piece: I Weave the Pirate Codex with My Zanpakuto

While traveling through the world of One Piece, Ross, who is in God Valley, unexpectedly finds Rocks's sword "Erosion" and the Mythical Zoan-type Phoenix Fruit.
The Zanpakuto workshop has thus awakened.
【"Erosion" + Phoenix Fruit = Zanpakuto: Minazuki】
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In the ruins of the Valley of the Gods, Rose begins to dissect the Flesh Droplet and takes away the soul of Rocks.
In a country where war never ends, the battlefield is divided by the sun, and Douglas Barrett, whose life hangs in the balance, is saved.
The World Government Laboratory, the Ghost Path tears through the darkness, taking away the orphans of the Lunaria race.
In the new world of Kojima, when the petals of Senbonzakura saved Amatsuki, they prevented the birth of Momonosuke Kozuki.
At the execution platform in Loguetown, the terrifying phantom of the Blackwing Demon descended to guide Roger's soul...
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Years later, when the shadow of the Gotei 13 looms over the Grand Line.
Morgans called me "the most dangerous partner," while Dorlag saw me as "an ally who must be guarded against."
Meanwhile, in Mary Geoise, the Celestial Dragons had already spread the word about the bounty on the "world's most dangerous criminal" far and wide.
Above the throne in the sky, having put away his Mirror Flower Water Moon and Flowing Blade Like Fire, Ross looked towards the Red Line.
Thirteen shadows slowly emerged behind him.
"Imsan--"
"The death knell has sounded."
Keywords: [One Piece, Professional Shinigami], [Zanpakuto], [Devil Fruit Fusion], [Rocks Pirates], [Gotei 13]