One Piece: I Transmigrate as Garp's Grandson

After transmigrating to the world of pirates, he became Garp's grandson and Luffy's older brother. At the age of five, he awakened [Blood of the Berserk], often losing control and going on violent rampages that caused severe damage to Marine Headquarters, so he was locked away in Impel Down.

It wasn't until Ace was imprisoned in Impel Down and Luffy's crew came to break him out that Luo Tian finally made his debut in the world of pirates. He entered the fray in the Paramount War and became a legend in a single battle!

That day, Luo Tian made a bold declaration to the Marines and pirates alike, his Haki on full display: “I'll take charge of whatever the Marines can handle, and I'll take charge of what they can't handle even more. In a word, clad in justice, I'll cut down everything with my sword.”

Garp wept tears of joy. “Now that's my good grandson!”

Marines: …

Pirates: …