Unleashing the Blade Without Limits: The World's Greatest Swordsman

The young Battosai transmigrates to the world of Naruto. In a world where ninjutsu defies reason, how can an ordinary swordsman survive?

"Ding! Congratulations, Host, on unlocking the achievement: First Sword Swing. Reward: the talent Heaven's Critical Hit!"

During the Great Ninja War, Heaven's Critical Hit activates against Madara's Susanoo, and one slash deals 999,999 damage!

Susanoo? Absolute defense? Cut it down in one stroke!

"Congratulations, Host, on unlocking the achievement: 100,000 Sword Swings. Reward: the weapon Demon Blade Murasame!"

From then on, every strike is a killing blow! Anyone whose defense is broken is slain with a single slash!

In this world of ninjas, the name Battosai continues to shine.

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