which path will i choose

part one

TANJIROU POV

It was late. i was on my way home when suddenly i smell blood . panic starting to rise as i hurried home

when i finally arrived . i couldn't believe on what i saw . i saw my mother and my siblings corpses lying with they blood painted the floor. then my focus changed when i heard a scream .

it was nezuko's scream

there was a man standing next to her.
when he saw me. he smiled and walk to me . he lift my chin up with his finger as his red eyes stare at me " You have that hanafuda earrings " he said he hold the earrings as it hanging on me " how about we have a deal you will work for me and i will let that sister of your live " i hassited to accept his request but i can't let nezuko die she the only family i have left. i nodded in agreement. suddenly he struck me with his fingers as i feel a liquid enter me. pain shoot at my body i lay on the ground as the pain was unbearable. i feel i like i passing out as my eyes slowly to close

no one pov

tanjirou and nezuko was brought back to the forthress by muzan
"nakime prepare a room for them they are going to stay here" the sound of the biwa was heard as the kamado siblings was dropped to their room

"summon kokushibo here i need to have a word with him" the biwa demon played her instrument as a door open to a room that reveal uppermoon 1. seeing his master kukoshibo kneel immediately in front of him

"i've brought a child that is the successor of your brother breathing technique i want you to train him to wield a sword" muzan said as he stare down to the kneeling demon in front of him " as you wish my lord " he responded "then you are dismissed" as muzan said that a sound of a biwa heard and kukoshibo was brought to tanjirou room . he stare down to the boy sleeping next to him . he has the hair that similar to his brother . he decided to meditate as he wait for the boy to wake up.

a few day have passed. tanjirou finally open his eyes . he woke up to a room  he doesn't recognize . "you're finally awake"

Tanjirou pov
  i slowly open my eyes to see an unfamiliar room. i look around to see a demon with six eyes " your finally awake " he said. i froze i was to scared to move or say something. i tried to remember what happen. how did i ended up here, then i realize " where nezuko" i said "where is my sister!"
he look at me " i do not know where or who is your sister" he said " that man he said he will let my sister live if  i work for him " " then you will have to ask him where she is . he did not tell me about your sister." he finally said. silence filled the room.
I'm so worry for nezuko, where is she is she alright. as i look down i notice that my nail was long and sharp. and then i touch my teeth to find that i have fangs. " it seems that you finally realized that you're a demon now" the demon next to me said. i look at him and asked " may i know your name".
"my name is kokushibo i am upper moon one.... i will be training you to wield a sword" "wield a sword?" i said questioning. " yes do you know any breathing technique perhaps breath of the sun " no i said then i remember my father once taught me a breathing technique that make him able to preform the hinokami kagura dance " tho my father did taught me to a breathing style that my family use to perform a dance dance of the fire god " " tell me about this dance" kukoshibo said a bit demanding." it a dance that been passed down along side with my earrings for generation. we perform the dance every year for the fire god to ward of diseases". kosushibo was silent for a while when finally he said " i would like to see this dance tommorow" he then stood up and told me to stay here as he leave the room