Our protagonist is a person who died and reincarnated into the one piece world.but instead of obtaining an overpowered system that makes you powerfull by killing and buying all kind of overpowered item.
what he received was a system that told him that he can only make the item he want himself,"what kind of system is this?".
but at the very least he can buy every crafting recipe and jutsu that exist in naruto and other anime.
"1 billion beli to buy an instruction how to summon shukaku?,how am i supposed to earn money to buy that!
Disclaimer:the cover is not mine and i don't owned one piece or naruto this is a fanfiction.