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The offer extended by Kagaya Ubuyashiki undoubtedly sent shockwaves through Lady Tamayo’s very being. As a demon herself, she had resigned herself to a life of seclusion and solitude, harboring a deep sense of shame for her transformation at the hands of Muzan Kibutsuji. The notion of humans willingly collaborating with her, of all creatures, was a concept she had never dared to entertain.

Yet, amidst the swirling chaos of uncertainty, Tamayo’s demon heritage emerged as an unexpected advantage in this dire situation. Her intimate knowledge of the intricate science of demons, acquired through years of observation and personal experience, bestowed upon her a unique expertise. Teaming up with the ingenious Insect Hashira, Shinobu, whose mastery in the art of crafting potent poisons and medicines is renowned, Tamayo saw the potential to concoct a lethal potion tailored specifically to combat a formidable foe like Muzan.

Furthermore, Tamayo’s past servitude under Muzan’s dark reign unveiled a wealth of invaluable insights. As one of the rare beings to have shared intimate proximity with the Demon King and lived to tell the tale, she possessed a treasure trove of insider information regarding his tendencies and vulnerabilities. While the notion of Muzan willingly succumbing to the effects of their debilitating concoction seemed far-fetched, Tamayo’s intricate understanding of his psyche provided a glimmer of hope in an otherwise bleak scenario.

Though the trust between Tamayo and Muzan had long been shattered by her past betrayal, her unparalleled comprehension of his inner workings remained unparalleled within the ranks of the Demon Slayer Corps. As the delicate dance between past allegiances and present alliances unfolded, Tamayo emerged as a pivotal figure—a beacon of knowledge and resilience in the face of insurmountable odds.