One Piece: The Fourth Calamity

After failing to catch a single pirate for ten years, the Marines' D031 Branch in the East Blue is about to be disbanded.

Branch Director Ka En Lake, a transmigrator who got his post through connections, summons players from a parallel Earth to keep his cushy job, unleashing the most terrifying Fourth Calamity in history!!

"Why? Why is he still grinning so happily with half his head split open?!" Kizaru stared wide-eyed.

"Are they really human? Their guts are spilling out, and they're still laughing as they fight! What kind of justice is this?!" Sengoku.

"What did you say? The D031 Branch is coming?" Akainu's expression changed. "Hide our weapons! Don't let them find them!"

"Hey! Stop! Stop!" Blackbeard struggled desperately, but still couldn't save his jeweled ring.

The Paramount War...

"Damn it! You've been yapping forever, so show us your health bar already!" The Marine soldiers in D031 Branch uniforms...

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