The Summit War? My Three-Inch Master Ends It with One Sword!

[Slice of Life + Invincible Protagonist + Comedic Xianxia + Gap Moe + Decisive and Ruthless + Righting Regrets + Guardian + Portable Space]

Ace is doomed to die at the Summit War? Akainu is acting all high and mighty? Sorry, my three-inch-tall Nascent Soul master wiped them all out with a single sword strike!

My name is Xuan Chenzi, an unparalleled sword immortal the cultivation world hasn't seen in ten thousand years. After my body was destroyed, I was left with nothing but a three-inch Nascent Soul. Somehow, a clueless kid named Luffy dug me out of the ground, mistaking me for a "ginseng doll"! I tried to take him as my disciple, but he refused and insisted on becoming King of the Pirates instead. "You wretched disciple! You have a perfectly good path to immortality and still refuse to take it. You're as hopeless as a block of wood!"

Oh, well. Your straw hat is easy enough on the eyes, so I'll turn it into a cave abode and stay there for now. From then on, the world had an invincible little master, just three inches tall, who treated the Four Emperors like ants and Devil Fruits like "defective products"! His sword intent crushes Hawkeye, his thunder techniques devour Enel, and a single thought turns deserts into oases! If anyone dares stand in the way of my disciple Luffy's path to kingship, they're dead!