Prologue: Unusual Surprise

In mid July 1898, healthy thirty two year old charcoal merchant Tanjuro Kamado receives a surprise when he sees his wife Kie, who is the same age as him, had delivered six babies. Although surprised, they quickly welcome the six babies into the world and name them Rana, Nezuko, Takeo, Hanako, Shigeru and Rokuta. As the sextuplets get older, the couple begin to teach them to fight as well as tell them about the origins of the family heirloom and other things. After over fourteen years, the sextuplets battle the demon king to defend their mother from him when he attacks with intentions of killing them and soon succeed in forcing him to retreat after being badly injured by him in late December 1912. The next morning, the sextuplets and their parents use their cart to bring their belongings and the family heirloom with them when they leave their mountain home behind. After a hour of walking, Rana notices they are being followed from behind by the Sound pillar Tengen Uzui, who shortly after uses his speed to quickly get the family and their belongings to his estate in their wooden cart half a minute after Nezuko tells him they need a place where they can recover from their injuries. There, he introduces his three wives Makio, Suma & Hinatsuru to the family of eight after the trio tackle him. After five days of her staying at his estate while she and her siblings heal from their injuries, Tengen brings Rana with him to the Demon Slayer Corps headquarters, where she meets his fellow pillars and their master Kagaya Ubuyashiki, who commends her for the bravery she, both of her sisters and all three of her brothers displayed.