Demon Slayer: Kimetsu no Yaiba: Hinokami Flames

Prologue

Deep in Mount Kumotori, a man performs a traditional ritual in the snowy cold night being watched by his son Tanjiro Kamado, and his wife Kie. Tanjiro watches in awe at his father's dance. "Do you see, Tanjiro?" Kie says. "You are witnessing your father's Kagura dance. He's dancing with the flames. So, to avoid catastrophe and injury, we offer a dance to 'The God of Fire' at the beginning of every year and pray to him. Someday, you'll have to carry on the tradition."

The following morning, Tanjiro was spending time with Tanjuro and wonders about the dance he watched before. "Father, how is it that you can dance in the snow like that with such a frail body?" He asks. "My lungs would be frozen."

 "There is a certain way you should breathe." Tanjuro answered. "A way where you won't get tired no matter how much you move." He then pats Tanjiro's head and reaches for a locked box and a key. "If you can perform the correct way to breathe, then you can dance forever Tanjiro. You can even endure the freezing cold."

 He unlocks the box and pulls out a book. "What is that?" "It's a journal from so long ago. Before you were born, it was given to us by a man with hair that looked like flames." They open the book, and Tanjiro is amazed at the techniques.

 "Tanjiro, when my time comes, you will start to train yourself to master the way of the sword and the breathing style. All you need is the dance and these earrings. Take these teaching from me and do not falter. It's a promise." Tanjiro nods his head with some tears in his eyes. "I promise Father." he promises. "I couldn't be prouder of you son." Tanjuro hugs his son for a few moments. "Now go help your mother finish the chores." Tanjiro runs to his mother and siblings to help, with Tanjuro looking at the sky. "If you can protect your family, you can face any challenge ahead of you."

As time passes by, Tanjuro passes away, leaving Tanjiro as the man of the house. He starts to learn about being a swordsman, and the Hinokami Kagura techniques. He soon keeps a daily routine. Morning training, play time with siblings, selling wood, and night training. He continues the routine unaware of the possible danger that is coming.

There's my Prologue. I'll make at least 1 chapter a week.