The Legend Became Reality. | Kimetsu No Yaiba.

Chapter 1. - Beginnings

(In this story, you are in your teenage years.)

"Grandma! Can you read my bedtime story!?" You pleaded with puppy dog eyes. Already tucked in bed, yet unable to sleep.1

"Alright, alright, Y/N.... But promise me you'll go to sleep after I finish!" Your grandmother remarked, and you slightly pouted.

"Fine..." You huffed, but still ready to hear the story your grandma always mentioned in your family conversations.

"Once upon a time.. There was once a very sick man who had a very strong desire to live. Every medication he took, it failed to help him even a little bit." Your grandma started. The sick man is the main antagonist in this story. This fact is unknown to you as of now.

"Soon, a very talented doctor heard about his condition and symptoms. And began his journey to this man's village, gathering all sorts of medicinal herbs along the way. But I could not find one particular herb, one that would complete his nefication for this man. The blue spider lily. That blooms only 3 times per year, and only in daylight." She continued, with you listening carefully to her words.

"The doctor then made ot to the village, will all but one ingredient to his medication. He had found the man's home. The man looked half dead already, so he stated his name to him and began brewing his cure."

"He had finished his cure in the span of a few days, but only the first, less important part. The part thar would give the man the strength to fight this illness and the muscle strength to move around. However, this second part of the medication would have taken weeks to produce, likely even months, due to the rarity of this Blue spider lily."

"The sick man grew impatient over the weeks. How could the second part take so long if the first took only days? The sick man had always thought about that throughout his day's. He grew too impatient. He travelled his village in search of something to murder this man. The man found a blade. He found one and made his way to stab the doctor. But only, he found the blue spider lily and had almost finished the cure. The sick nan just grew much too impatient after many months. And he stabbed the doctor in the back of the head."

"This sick man soon gained lots of strength, enough strength to walk around freely, tun around freely. Do anything any man with rights could do. But the only two conditions to have this outstanding strength were to give up his ability to consume whatever he pleased, leaving his diet to human flesh. And to give up the ability to go out in broad daylight, becoming a mysterious, man-eating monster who roams the Earth's darkest hours."

"Over the many years, he had murdered many people, committed many crimes in which many others of high authority sought out to kill him, but he was now immortal. He had given up his humanity and became a demon. No amount of arrows or stones could murder him. Not even the toughest and sharpest of blades. Only the nichirin blade can kill him by slicing all his hearts and brains."

"No one could kill him. He killed everyone who stood in his path. This man went by the name of Muzan Kibutsuji. And he made it his life mission to find the blue spider lily and overcome the sun."

Hours passed, it was now about 11pm. Your grandmother finished the story. And you were fast asleep.

Your grandmother soon passed away, and many years after than, you died of an illness. But what would never come to your mind, was the reincarnation of a slayer in the story your grandmother told long ago.