One Piece: I Infiltrated the Four Emperors, and the Marines Are Losing It

As a Marine undercover agent embedded deep within the Whitebeard Pirates, Dio plans to get Sengoku to restore his identity at the Paramount War so he can lie low in peace. But by a twist of fate, Whitebeard appoints him commander of the Fifth Division.

After fighting Kizaru and standing firm against Mihawk, he earns a huge bounty increase for his spectacular performance, only for Sengoku to mistake him for a pirate who lies through his teeth.

He kills a G-5 commodore to save civilians, crushes the undercover agent Vergo in a head-on fight, and unexpectedly recruits the future Admiral Fujitora.

Keeping his identity from his men while pushing the limits of the Marines' patience, he wields the Death God's Divine Spear and the Thunder Breathing technique, constantly switching sides between the Four Emperors and the Marines as he embarks on an invincible undercover-agent power trip.

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