After they defeated muzan, they gave up on all swordsman skills and breathing techniques.they shifted to a More comfortable way of living.out of the nine hashira,only three of them survived;Giyu Tomioka,Saneml Shinazugawa and the retired Tengen Uzui.of course,Tanjiro,Zenitsu and inosuke,along with others survived too.many had chosen to only look at the past as it was but one would always doubt;Giyu Tomioka.he wrote down chronicles of the water hashira and a guide to water breathing.after his death in old age,his three children took his belongings and did what his last words said 'Train the next generation in the way I trained you 'His children trained the next generations until they too were no longer alive.the following generations chose to forget what their ancestor had told them to do and locked all of Tomioka's teachings in a safe and buried it away.more years past by and a new generation was born.a generation of prosperity.in this time,a young boy named Uzuki Tomioka was born.he looked almost exactly like Giyu Tomioka.it was like he was a complete clone of his ancestor.he even talked and behaved like him.as young as six years old, the boy had already shown deep interest in swordsmanship.his parents feared for this same reason.they feared that he would bring back what they had chosen to forget and that he would die at such a young age.
Years past by and he was at the age of nineteen and was very respectable in the clan.for thirteen years long he had chosen to play his parents' pet but the dream he had from his childhood never withered away.it was now time to make him the Head of the clan.what would he choose? family or dream?
"Uzuki.as your father and head of our clan,I choose you to be my successor on this glorious day from the gods.do you choose it?"
"I do"
"Good.is there anything more you'd like to know before fully becoming the Head of the Tomioka clan?"
"Yes..."
"What is it?"
"I would like to know why you chose to forget about what our ancestors left for us.we were a clan of swordsmen who had unique techniques.i would like you to explain why you chose to forget about it"
"Nonsense! this clan was in the void before my father chose to leave that horrid past life and start a new one!"
"I want to continue that way of our life..."
"Then, perhaps you are not ready to become the leader of our clan "
"How can I become a leader if I don't know of a way to protect our clan? I'm going to learn the breathing techniques and bring back what our ancestors started!"
"Enough of that putrid dribble of yours.Go cool off your head "
"But father i-..."
"You are dismissed! now leave my sight before I disown you "
"Yes, father "
He slowly backed out of the room and went outside.he punched his fist hard into a tree out of anger.he walked along the way with frustration deep in his heart.
"My father doesn't understand.they all might be comfortable but I know that the demons aren't dead.i just know it "
He continued with his fist clenching and his teeth gritting.he made it into the garden and picked up the wooden sword he had made and smacked it onto a training pole and broke the wooden sword.he sat down for an hour before going back to the mansion.he walked to his room and passed by the door of his mother's and father's bedroom.as he passed,he overheard their conversation and stopped to listen.
"Dear, you're forcing all this on him.don't you think it's a bit too much?I mean, his still young"
"Well, he's young and foolish.he sounds just like our dead and useless ancestors "
After hearing this,he walked away with anger building inside of him.he ran out into the Streets, leaving the mansion behind.he went and stared up into the night sky.
Meanwhile...
"What do you wish for, Lord Muzan?"
"The time I've been waiting for is now here.now that all the demon slayer corpse is in history, nothing can get in my way of ending all useless humanity and replacing it with my demon kind"
"Yes..."
"I'm making you demons the new twelve kizuki which will only consist of the upper six demons and a special new unit i will be calling the six Oni kage "
"We thank you,Lord Muzan.what pleasure it is to be exalted by you.we won't let you down"
"You better not... now,go and begin the rebirth"
"Yes, Lord muzan"
The Demons dispersed out into humanity and began what their Lord had told them.Uzuki was walking in the streets when he heard an explosion from the direction of where he lived.he ran with all his strength and made it to the devastated mansion he called home.upon his arrival,he saw a demon feasting on the flesh of the clan members as if it was enjoying an exquisite banquet.it gazed at him over its shoulder with the number six in its eyes.he shouted and ran towards the demon hoping to kill it without a weapon.it vanished into thin air and appeared behind him and punched his head.he flew into the broken mansion and went unconscious.the demon didn't bother finishing him off because it was already satisfied with the humans it had devoured already.it jumped into the sky and went into the city.uzuki was left behind in the burning mansion.he opened his eyes and saw a man in a uniform with a sword at his waist, wearing a blue kimono.he was too weak to stay awake so he feinted again...