The Dark Doraemon of the Grand Line!

Sang Ze transmigrated into the world of One Piece and unexpectedly activated a System just like Doraemon's!

The only difference was that Sang Ze's was a black briefcase! He only made deals with people who had desires and problems they wanted solved. Whatever they wanted, Sang Ze had it...

The deal required Sang Ze to offer several choices. Pick one, and the deal was completed perfectly!

Pick more than one, and it counted as greed, earning Sang Ze's punishment! In return, Sang Ze would receive double the rewards!

When Nami first met him, Sang Ze offered her three choices. She chose to save her hometown from the Fish-Man crew!

Nami chose to follow Sang Ze!

"Sang Ze... He may smile on the outside, but inside... he's terrifying! Best not to bring up a deal in front of him! You'll die..."

Sang Ze's arrival plunged the entire sea into terror. Even the Marines trembled at the mention of his name!

"That terrifying merchant... He wiped out Don Krieg's entire pirate crew in an instant! Their deaths were gruesome!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.