Stealing the Immortal Bird Fruit: Eight Gates Night Guy at God Valley

Roy transmigrates to the era of God Valley and becomes a Celestial Dragon's slave, beaten to death. Fortunately, as a transmigrator, he awakens the Myriad Worlds Martial Arts System.

However, the System bugs out during his transmigration, and every martial art it contains comes with dangerous side effects.

Luckily, this world has Devil Fruits, and the Phoenix Devil Fruit can eliminate most of those side effects.

So Roy joins Ivankov's Devil Fruit theft plan ahead of schedule and snatches the Phoenix Devil Fruit for himself.

Later, when the Celestial Dragons pursue him, he unleashes Night Guy.

Rocks: "Even I couldn't stop that kick."

Roger: "You said he was a slave?"

Whitebeard: "That fruit... I feel like I've lost something."

Years later, after Roy displays countless bizarre techniques, including Dan Shi, Dead Bone Pulse, and the Heavenly Demon Disintegration Art, and flattens Mary Geoise,

he realizes that martial arts with side effects are the truly powerful ones.

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