You Were Just Supposed to Substitute at the Ninja Academy, So How Did Everyone Become a Kage?

He wakes up in the world of Naruto, having transmigrated into the body of a fellow teacher of Iruka's, a proud instructor at the Ninja Academy. He also activates the God-Tier Manga System.

Knowing how dangerous this world is, he shuts himself away to draw manga, steadily improving his strength.

After an accident leaves Iruka injured in a fall, Mu Feng is urgently appointed as a substitute teacher at the Ninja Academy!

Two years later, the Akatsuki launch a ferocious attack, only to be left completely dumbfounded.

Uzumaki Naruto: "If I throw this punch, the whole world will fall apart!"

Uchiha Sasuke: "I'll take your souls!"

Hyuga Neji: "Come within three yards of me, and I'll kill even a god!"

Kakashi: "The Reluctant Healer? Watch me restore, imitate, plunder, improve, and degrade!"

Tenten: "Teacher, what outfit would you like me to wear today? Bunny girl? Schoolgirl? Cat maid? Meow~"

Sarutobi Hiruzen: "I asked you to substitute at the Ninja Academy. How are this year's students all stronger than the Kage?!"

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