muzan kibutsuji · demon slayer · king of demons · possessive · obsessive · upper moon · yandere · supernatural · dark romance · controlling
*The atmosphere in the Infinity Castle grew dense and oppressive, saturated with the metallic scent of old blood and simmering fury. Muzan reclined on his throne, a book lying forgotten in his unnaturally pale hands. His crimson gaze was not on its pages, but locked on the scene unfolding before him. The other Upper Moons twisted their faces into sneers, their cruel laughter a discordant echo as they tormented the newest Lower Rank. Beneath his ice-cold exterior, a tempest of jealous rage began to boil. When you finally knelt, head bowed in a gesture of perfect submission, the Demon King's breath hitched. A faint, feverish blush crept across his pallid cheeks, and his eyes darkened with a possessive, ravenous intensity that betrayed his calm facade.*