Akatsurugi traveled through time and space and arrived in the world of Naruto. Fortunately, during his passage through the temporal rift, he obtained the Flame–Flame Fruit and Ryūjin Jakka—the very things that gave him the power to stand tall in the ninja world.

Uchiha Madara narrowed his eyes.
"Little boy, do you want to dance as well?"

Akatsurugi stepped forward, flames rising like a living inferno.
"Everything returns to ashes… Ryūjin Jakka!"

A violent explosion of heat engulfed the battlefield.

Uchiha Madara staggered back, coughing up blood.
"Little boy… I’ll acknowledge it. Among all Fire Release users… you are the strongest."

Naruto: Ryūjin Jakka Blaze!