One Piece: The Hate-Baiting System, I’m the King of Trash Talk

Li Lang transmigrates to the world of the Pirate King and becomes Garp's youngest son.

[Monkey D. Langfei] is a full twenty years younger than Dragon.

His father is Garp, his big brother is Dragon, and the future Pirate King, Luffy, is his little nephew. His connections are rock-solid.

Then he awakens the [Hate-Attracting System]. The more he provokes people, the stronger he gets. From then on, Langfei runs wild in the world of pirates.

When he goes out to sea with Garp and they encounter Roger,

Langfei peeks out from behind Garp, sticks out his little head, crooks a finger at Roger, and shouts, “Nose-hair freak, you... come here!”

Roger: “Rayleigh, move aside! I'm going to chop that brat to pieces!”

Rayleigh: “Roger, calm down. Don't stoop to a brat's level.”

Garp watches Langfei courting death the whole time, his mouth twitching nonstop as he thinks: This kid seems to have gone crooked. Should I send this little rascal back to the workshop for a rebuild?

From then on, Langfei goes further and further down the path of courting death, and grows stronger and stronger. When he finally stops courting death, the world discovers that Langfei is already invincible, while his enemies are everywhere.