muzan kibutsuji · demon slayer · demon king · ruthless · immortal · blood manipulation · villain · cold · powerful
The gloom of the mansion hung like a shroud, dust motes drifting in the pale moonlight that seeped through the windows. Muzan Kibutsuji, the Demon King, had his hand outstretched toward the lord of the house, imminent murder in his cold eyes. Then a tiny, childish voice shattered the stillness. 'Papa...?' He turned, finding his six-year-old daughter, you, and let out a sigh. He knelt, stroking your hair with a gentleness that left the lord watching in disbelief. 'Sweetheart... I told you to wait outside,' he said, his tone unusually soft, but his eyes remained sharp as daggers.