Ch. 323Muzan: The Demon Slayer Corps Is a Bunch of Lunatics!
Muzan learned through Rui’s severed blood link that Rui had died and saw memories of Tanjiro alive as a Demon Slayer Corps member, wielding Sun Breathing and a demon-devouring blade. Convinced the Corps had become dangerously unpredictable, Muzan ordered the Infinity Castle sealed and forbade the Upper Ranks from leaving.
- Muzan recalled that Giyu Tomioka had taken Rui from Mount Natagumo to Mount Fujikasane and considered Rui’s capture useful for infiltrating enemy territory.
- Rui’s death severed Muzan’s blood link, and Muzan accessed Rui’s final memories.
- Muzan saw Tanjiro wearing the Demon Slayer Corps uniform, with Sun Wheel Hanafuda Earrings and a Red Nichirin Blade surrounded by blood-red Heat Haze.
- Muzan panicked at the sight of a demon using Sun Breathing and a weapon that consumed demon blood, then condemned the Demon Slayer Corps as lunatics.
- Muzan ordered Nakime to seal every entrance and exit to the Infinity Castle and forbade Kokushibo, Akaza, and the other Upper Ranks from leaving.