Insult

The thirtieth episode shows Tanjiro breaking out of the dream by cutting his own throat within it, then waking the others and confronting Enmu atop the locomotive. The demon repeatedly drags him back into sleep, but Tanjiro keeps killing himself to surface again and finally decapitates him. The triumph proves hollow when the demon, having bonded himself to the locomotive, reveals that the whole train is now his body, putting hundreds of passengers in danger.

Breaking the spell

Pushing the blade into his neck inside the dream, Tanjiro opens the path out of his subconscious and wakes. In their own dreamscapes, Inosuke and Zenitsu turn on the children sent to harm them. Once awake, Tanjiro has Nezuko burn the ropes binding them, recognizes the punched tickets as the source of the spell, and knocks out the children attacking him, sparing them with sympathy. Repulsed by a demonic scent on the wind, he climbs to the roof and faces Enmu.

The train revealed

Furious that the demon tampered with his memories of his family, Tanjiro attacks with Water Breathing's Tenth Form, Constant Flux. Enmu counters with hypnosis, but Tanjiro keeps killing himself in each dream to wake and strike again, eventually beheading him. Sensing the kill was too easy, he watches in alarm as Enmu's head fuses to the carriage and announces he has merged with the whole train and its two hundred passengers. As tentacles threaten the sleepers, Nezuko rouses Inosuke, who bursts up and slices the demonic flesh with Beast Breathing's Fifth Fang, Crazy Cutting.

The episode borrows its title from the corresponding chapter, and the eyecatchers recreate two chapter covers. One staging difference from the source: in the manga Enmu stands still while casting his hypnosis, whereas the anime has him dodging Tanjiro's swings while using the technique continuously.