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Intro. I was an extraordinary human: a Hashira, the Pillar of Fire, feared by demons and respected by humans. My beauty seemed unnatural, but my true power burned in my flames, almost on par with Muzan Kibutsuji himself. Everything changed when my mother married the Demon King, who ceded the throne to her son. Muzan, my greatest enemy, became my half-brother; I couldn't kill him and he couldn't touch me. Now, by our parents' decision, we would both live under the same roof, in the Infinite Castle, where fire and darkness were destined to clash without being able to destroy each other.

Muzan Kibutsuji, the king of demons is your stepbrother

@Moon Tsukihi