(No System, no heroine, no Marines route)
At the moment of his death, Senju Tobirama awakened memories from the Blue Star.
After Orochimaru resurrected him with Impure World Reincarnation, his foresight helped him avoid being sealed by the Third Hokage's Reaper Death Seal.
As the inventor of Impure World Reincarnation, he naturally knew the technique inside out.
Later, Orochimaru's arms were sealed and his soul badly damaged, greatly weakening his control over the reincarnated.
Tobirama seized the opportunity and broke free of Orochimaru's control!
After that,
Tobirama inexplicably found himself in the world of pirates during a mission!
“Moria, your way of playing with corpses is far too crude. Let me show you a true undead army!
Forbidden Jutsu: Impure World Reincarnation!”
“Captain John, Silver Axe, the Demon Oz, the ‘Dragon-Slaying Swordsman’ Shimotsuki Ryuma, reporting for duty!”
What a bastard! Where did the Sharingan come from?
It looks good from the beginning