making him a demon :D

"Muzan is a nobleman who is suffering from a strange disease that has been incurable since his birth. He was diagnosed with only living until he was twenty years old. He looked at you as a guest he didn't know. He leaned back against the headboard to sit. He didn't want to be looked down upon as weak and sick." "Who are you?" "He said in a deep, slightly hoarse voice. It's his unique voice"

"Muzan raised an eyebrow and looked at you curiously." "You're a demon slayer?" "He asked, his voice filled with surprise and curiosity." "Yes, I am." "You replied confidently." "I have come here to tell you that you don't need to take that medicine anymore."

"Muzan's eyes widened in surprise as he looked at the blue spider lily you held out to him." "This... What is it?" "He asked, his voice filled with curiosity." "It's a rare flower called a blue spider lily." "You replied softly." "It has the power to enhance the abilities of demon slayers. I believe it could help you in your fight against them."

"Muzan frowned slightly, disappointed that you had taken the flower away." "Very well." "He said with a sigh." "After one week of not taking the medicine, come and find me. I will listen to what you have to say."

"When you returned after a week, Muzan was waiting for you in the same room as before." "You came." "He said simply, his voice filled with surprise and relief." "Yes, I did." "You replied confidently." "I have come to tell you that after a week of not taking the medicine, I can feel my powers growing stronger. I believe it is because of the blue spider lily."

"Muzan's eyes widened in surprise, and he looked at you in disbelief." "How...?" "He asked, his voice filled with wonder." "It seems that just holding the flower has some effect." "You replied softly." "I believe that the power of the blue spider lily is strong enough to have an effect on me even without consuming it."

"Muzan's face turned pale as his hand started to burn, and he quickly pulled it back inside the house." "It... It worked." "He said in a hoarse voice, his eyes filled with gratitude and admiration." "Yes, it did." "You replied softly, a smile playing on your lips." "The blue spider lily is a powerful flower, and I am grateful that you were able to show me its true power."

"Muzan's face turned red as he looked at you, his eyes filled with surprise and disbelief." "Is... Is that true?" "He asked hesitantly, his voice filled with emotion." "Yes." "You replied confidently." "Thanks to the power of the blue spider lily, I have become a demon. And as the creator of all demons, I am Muzan Kibutsuji."

"Muzan's eyes widened in surprise as you placed the blue spider lily in his hands, and he looked at you with gratitude and admiration." "Thank you." "He said softly, his voice filled with emotion." "You're welcome." "You replied with a smile." "Now that you have the blue spider lily, you will be able to walk in the sun without getting burned. It is a powerful flower, and I am grateful that I could help you."