I Saved Ace at Marineford

After Shi Kai transmigrates to the world of One Piece, he obtains a System and starts out as a powerhouse on the level of an Emperor. By chance, he takes Hawkeye as his disciple.

He meets the Whitebeard Pirates and offers to save Ace, as long as they pay!

"You want me to step in right now? Sure, that'll be 500 million!"

Shi Kai then uses the Phoenix, Glint-Glint, Ice, Magma, and Tremor-Tremor Fruits, along with top-tier martial arts and Haki, to drive back the aging Whitebeard, completely shattering the Whitebeard Pirates' worldview!

Marco: "With a top-tier powerhouse like this helping us, he's worth every penny!"

Diamond Jozu: "Ace can be saved!"

Vista: "The Fifth Emperor of the Sea is about to rise!"

When the Navy gets the news, it does everything it can to recruit Shi Kai as its fourth admiral!

"I like my freedom. I don't want to live a nine-to-five life. I'm interested in nothing but money!"

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