[Naruto] Altana Appears Out of Nowhere

Just as Black Zetsu makes a dazzling entrance and pours out the bitter details of his thousand-year plan to save his mother, Earth's Altana makes a dazzling entrance!

Black Zetsu is defeated, and Kaguya Otsutsuki loses her role in the story.

From today onward, the Naruto world will begin developing a wondrous technology-based ninja arts tree!

There won't be many crossover series, since I'm worried about upsetting the power balance. The ones I do include will probably be anime with top-tier characters.