We will discuss about Sanemi’s backstory from Demon Slayer: Kimetsu No Yaiba in this blog post. He is the current Wind Hashira in the Demon Slayer Corps. Sanemi’s backstory included his tough childhood and how he became the wind hashira.
He is rude, quick-tempered, rash, and stubborn. He often acts on impulse and is quick to get angry. He doesn’t care much about other people and can get very angry very quickly.
Sanemi only showed respect for Kagaya Ubuyashiki, which was only after he discovered that the man was much more than he looked like. Sanemi has also shown that he wants to fight. He has said that he wants to fight Upper Rank demons and that he is excited to fight Upper Rank One, Kokushibo.
Here, we will see Sanemi’s backstory in Demon Slayer: Kimetsu no Yaiba.
Sanemi Backstory – As a Child
Sanemi was the oldest of his parents’ children. He had to seven other siblings, and all of them, along with their parents, lived together.
Sanemi’s Cruel Father
But, their father was cruel and always hit the kids and their mother. One day, someone who had a grudge against him stabbed him and killed him. After that, Sanemi and his siblings made a plan to help their mother and other family members.
When Sanemi’s mother didn’t come home one day, he went out to look for her.
Sanemi’s Mother Turning Into a Demon
He found her at some point and saw that she had turned into a demon, but he couldn’t stop her from going back home and killing five of his siblings. Genya was about to kill her, but Sanemi grabbed her with a knife and threw her out the window onto the street below.
In the fight that followed, she gave him the two prominent scars on his face, and because his marechi blood makes demons confused and drunk, he was able to kill her.
Genya Blaming Sanemi
When Genya runs out into the street to find a doctor for his severely hurt siblings, he finds Sanemi and their mother dead at his feet.
Genya screams and accuses Sanemi of killing her, not knowing that the “wolf” that attacked them was really their demonised mother. Sanemi, still in shock, lost some of her colour vision as their mother disappeared in the sunlight.
Sanemi Slaying Demons
After that, Sanemi left Genya and began hunting demons on his own, with a strong desire to kill himself.
Sanemi didn’t know about Demon Slayers or Nichirin Swords, so he fought demons at night with a variety of weapons. He made them weak and captured them until morning when he strung them up and let the sun kill them.
Even though he fought in a rough and dangerous way, he managed to stay alive thanks to luck and the smell of his blood.
Sanemi Backstory – Becoming a Demon Slayer
He went around looking for demons and eventually met Masachika Kumeno, a real Demon Slayer, who helped him and put him in touch with a real trainer.
When he was done training, the two of them worked together to beat the Lower Rank 1 of the Twelve Kizuki. Kumeno died in the battle, though, so only Sanemi was given the title of Wind Hashira.
Gyomei Himejima, Kanae Kocho, Tengen Uzui, and Giyu Tomioka were already Hashiras when he was promoted.
Sanemi Badmouthing Kagaya
Sanemi was angry about Kumeno’s death, so he takes it out on Kagaya. He says that Kagaya is happy to give orders from above while the Demon Slayers die and bleed for his cause.
To his surprise, Kagaya takes the criticism well before naming Kumeno.
Kanae then tells him that Kagaya has memorised the names and backgrounds of every Demon Slayer who has died since he became the leader.
After making this discovery and reading Kumeno’s will, which Kagaya gave to him, Sanemi has a newfound respect for the leader of the Demon Slayer Corps.
Final Thoughts – Sanemi Backstory
Sanemi’s childhood was particularly weird and filled with despair. His own mother became a demon and killed most of his siblings.
On top of it, he had to kill her own mother (the demon) to save his brother and himself. Even after that, his younger brother blamed him for killing their mother. This incident has shown to turn Sanemi into a quick-tempered and angry person.