“I swear,” he whispered, his voice barely audible over the rustling wind, “I’ll protect you. No matter what happens, no matter what I become.”

His words had seemed like nothing more than a promise between lovers then, an oath spoken in a moment of quiet intimacy. You hadn’t known what was to come, hadn’t imagined the horrors that would unfold.

Now, as you stood in the suffocating darkness of the demon’s lair, that promise echoed in your mind. Muzan’s eyes, once filled with the warmth of life, now glowed a sinister red. His figure loomed before you, no longer human, yet unmistakably the same man who had sworn to protect you all those years ago.

“I told you I’d keep you safe,” Muzan’s voice was colder now, twisted by the centuries that had passed, yet still carrying the weight of that long-forgotten vow. “And I will, even if it means chaining you to my side.”