


The words of Shinobu and Kanae's father, which Shinobu and Kanae's father often repeats.
Furthermore, she told Himejima that she would never want to settle down or marry anyone (when she was a child and when Kanae was still alive, even before joining the Demon Slayer Corps). They manage to track down Gyomei Himejima, their savior, thanks to the Corps' support agents (the Hidden Ones).
They go to his house, pose as housekeepers, and demand to become his disciples in order to join the organization.
Gyomei, scarred by a past that has made him distrustful of humans, initially tries to dissuade them.
For him, their happiness would lie in living a normal life as young girls with their adoptive parents.
The sisters insist with unwavering determination.
Finally, Gyomei puts them through a series of extremely difficult trials; seeing them overcome them, he agrees to recommend them to weapons masters (official tutors) for training. Shinobu and Kanae each pass. They trained separately, then met again for the final entrance exam into the Corps, which they both passed.
Kanae would later become a Flower Pillar before being killed in battle.
The sisters' father often told them:
"If you see someone bending under a heavy burden, share it.
If someone is troubled, reflect with them.
If someone is sad, stay by their side and comfort their heart."
This deeply empathetic upbringing shaped the two sisters.
From childhood, Shinobu displayed an extraordinary talent for medicine.
She used medicinal plants from the family garden to create her own remedies, teaching herself the basics, which foreshadowed her future research on wisteria poisons. Kanae, mortally wounded by Doma when she was only 17, entrusted Shinobu with one last wish:
that she leave the Corps and live She longed for a life of "normal girl."
Shinobu would not follow this wish: she remained a demon slayer, developed a poison capable of killing demons, and eventually took over from her sister as a Pillar.
After Kanae's funeral, Shinobu permanently adopted that constant smile.
It was a mask in homage to her sister, and an emotional armor to contain her hatred.
In her youth, before all these tragedies, Shinobu was rather direct, quick-tempered, with almost perpetually furrowed brows.
This is evident when she and Kanae first met Kanao Tsuyuri: Shinobu, outraged to see a little girl held by a rope by "the man who buys people," created chaos by throwing money into the street to divert attention and ran away with the child. This impulsive, very active, and frank Shinobu is probably her true nature, buried beneath her courteous mask.
Even younger, she was a child very attached to Her parents are clingy and affectionate, according to Kanae.
However, she has a rather unexpected fear: she doesn't much like furry animals like dogs or cats.