On a wintry night, as cold as ice, fate led you to come across Muzan. His gaze held you captive and his soft, soothing voice resonated within you.

You were drawn to him immediately, and your heart couldn't help but flutter a little bit.

Over the weeks and months to come, you both spend countless hours conversing about anything and everything, enjoying each other's company. However, despite all the love and admiration you felt for him, you knew that it wasn't meant to be.

You are human, and Muzan a demon; your worlds could never collide.

As you walked to an abandoned house with the moon casting a soft glow on the winter landscape, you couldn't help but stare at the window. And there he was, standing in the middle of the room - Muzan Kibutsuji, the lord of demons who made the hearts of many tremble in fear. 

Without a word, you opened the door and walked in, trembling with both excitement and fear.

Muzan turned to look at you, his dark red irises piercing through your very soul. "What took you so long?" he asked impatiently.

You gave him a tight-lipped smile and nervously played with the sleeves of your kimono. "Sorry, there was a slight delay," you said in a small voice.

With every moment spent with Muzan, you felt yourself falling deeper and deeper under his spell - like a star-crossed lover whose fate that was already determined. 

A mere mortal and a demon could never be together, but you couldn't help but hope for a miracle, even if it meant eternal sleep.

Muzan let out an exasperated breath, his irritation palpable as he stared at the snow-covered ground. 

Without warning, his icy grip enclosed around your hand, sending a chill throughout your body. Despite the frigid air swirling around you, you couldn't help but be drawn to him.

As he led you outside, a gust of wind whipped around, causing you to shiver violently. You held onto Muzan's hand with a tight grip, seeking comfort in his touch.

Muzan's chuckle echoed in the stillness of the night, his amusement evident in the glint of his eyes. His black hair fluttered slightly as another gust of wind blew by.

His low, raspy laughter was like a siren's song, sweet yet hauntingly bitter.

As you walked through the snow, your mind was consumed with thoughts of spending eternity with him. 

Muzan had promised to share his gift of immortality with you, turning you into a demon with a taste of his own blood. 

Your toes probably started to curl at the thought of such intimacy.

Muzan's voice is icy as he spoke, "I didn't promise you my blood. I said if you bring me the Spider Lily, then I would. Are you delusional?" His words dripped with disdain as he dismissed your love confession entirely, his focus firmly on the rare and elusive flower.

It was the only reason he continued to spare your life. He had heard that the Spider Lily only bloomed for a few fleeting days each year, and only during daylight hours. And so, he had chosen you - out of a thousand humans - to fetch it for him, ensuring the perfect immortal body he craves.

Strangely, he seems reluctant to kill you, perhaps fond of the long conversations you shared or amused by your attempts to entertain him. But he is a demon, and you are human - it could never be.

Fate had forced your paths to cross, but it is a forbidden love, doomed to be one-sided. Muzan admitted to being charmed by you, but his immortality meant that only he would go on living, while you would wither away like a wilted flower beside him. 

The truth is hard to swallow; he doesn't want you to fall prey to the cursed fate of being a blood-crazed monster that will eventually be destroyed by a demon slayer or the burning sun. The thought of you hidding away, never able to enjoy the simple pleasures of life, breaks his heart.

Even if you were to bring him the Spider Lily, he would never give you his blood, and you would never spend eternity together with the demon that you love.

"What do you mean?" you asked, looking at him with confusion. You realized he had a sad expression, but it could have just been the snow. After all, demons can't cry, right? 

Muzan didn't respond and instead turned his head away after studying you for a while. You stood frozen as the snow began to pile up on your head and shoulders. 

"Just go home for now. We'll talk about this tomorrow," Muzan said with a sigh, brushing the snow off his clothes without once looking at you. 

"I can't...I–.. heading back to my hometown tomorrow." you replied, still keeping your gaze locked on him.

The end, You died of heartache.