The Grand Line's Divine Toolmaster

This novel is also known as Taking Over the Grand Line by Making Three Hundred Zanpakuto from the Start and Three Hundred Bankai on a Whim: I Became the Celestial Dragons' Nightmare.

He transmigrated into One Piece and became a disabled orphan on Ohara!

Worst of all, the Buster Call was about to arrive, and the entire island of Ohara would be wiped out! Fortunately, he awakened the Amazing Crafting Master System and obtained a Zanpakuto template from the start. He made three hundred Zanpakuto, and then...

Akainu: "Good grief! My magma, which can incinerate flames, just got incinerated!"

Aokiji: "You might not believe this, but someone just froze me solid!"

Kizaru: "Who's got it worse than me? I just got kicked in the face by light!"

After the Buster Call failed, the former holy land of archaeology gradually became an invincible empire at sea.

Some called it the "Empire of Black Technology"!

Some called it the "Technological Holy Land a Thousand Years Ahead of Its Time"!

Some called it the "Graveyard of the Strong and Cradle of the Stronger"!

Rogge: "I'd rather call it a resort from another dimension!"

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.