Naruto: Fusing Templates from Ten Thousand Worlds

Transmigrating to Konoha and becoming a classmate of Uzumaki Kushina, Natsuki awakened a system called the Lord of Ten Thousand Worlds. As long as he fulfills specific conditions, he can fuse character templates from all the worlds.

Conan, Luffy, Kamado Tanjiro, Uzumaki Naruto, Kamijou Touma, Emiya Shirou, Inuyasha, Gojo Satoru, Aizen, and more.

When all character templates gather within him, the ninja world welcomes its sternest father.

"Tsunade, I am the Hokage!"

"Orochimaru, want to live forever? I'll teach you."

"Otsutsuki Kaguya, you are under arrest!"

"Sage of Six Paths, you called me by my name before, and I didn't pick a fight with you. What should you call me now?"

ps: A relaxed, invincible style. Already has one book with an average subscription of 10,000 <Teaching in Naruto, System Says I'm Tsunade's Student> and two books with an average subscription of 8,000 <Lurking in Konoha, Part-time Hokage>...