Uchiha Madara wakes up to find himself the frail leader of the Demon Slayer Corps. Seeing that the Hashira are still using Breathing Style techniques to give demons a scraping massage, Madara falls silent.
"All flash and no substance. Chakra is better."
And so, Madara's crash course in ninjutsu begins.
The Flame Hashira learns Great Fire Annihilation and burns the Wisteria forest bald. Madara: "That'll make room for graves."
The Water Hashira practices Water Severing Wave, turning demons into sashimi. Madara: "Artfully shattered."
The Insect Hashira hands out a pack of parasitic bugs, and the demons get chewed into crackers. Shinobu: "So clean."
The Stone Hashira learns Dust Release, leaving not even demon dust behind. Gyomei weeps: "That was one thorough exorcism."
The Wind Hashira practices wind blades, giving demons a taste of being torn apart by five horses. Sanemi: "Way more satisfying than a Nichirin Blade!"
Zenitsu learns Kirin, singeing his hair as he wails. Madara: "Next time, use a hair-protection ninjutsu."
The Love Hashira masters monstrous strength and blasts demons into atoms. Mitsuri blushes: "I wasn't even trying~"
The Serpent Hashira summons Manda, recreating Anaconda. Manda: "Time for seconds."
The Sound Hashira learns Uchiha-style throwing, turning demons into hedgehogs. Tengen: "Flashy!"
The Mist Hashira learns the Hidden Mist Technique, leaving demons confused as they die. Muichiro: "Who am I?"
The Flower Hashira learns Wood Release, wrapping demons up like rice dumplings. Kanae gently says: "It beautifies the surroundings."
Hearing that demons can regenerate, Madara responds by using Impure World Reincarnation. The Hashira of every generation come back to life and gang up on the Upper Ranks.
Madara watches over his tea: "Whoever gets tired first loses."
And Muzan?
Madara hears that the Demon King is immortal and snaps his fingers. Chibaku Tensei rises into the sky, and Muzan gets himself a private room in a starry prison.
A reader's guide:
1. Madara's lessons: There's no demon that can't be dealt with by one ninjutsu technique.
2. The Nine Hashira's daily lives: slaying demons by day, extra lessons at night, and getting put under genjutsu to spar with the other Hashira while they sleep.
3. Muzan: Is it too late to quit and become human?
