Anime Crossover: Absolute Darkness

Traveling through countless anime worlds, let me play the song of hell! Mu Nan stood at Marine Headquarters, gazing at the densely packed ranks of Marines. He gave a scornful smile, then called out to Sengoku, "Admiral, are you ready to die?!"

First world: Black Bullet! Second world: One Piece!!

The world of One Piece has now been unlocked!

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