There’s no such thing as ‘bad people’.

What does Demon Slayer: Kimetsu no Yaiba tell us about good and bad people?
We were brought up to think that good and evil are constant forces against each other, taught to us by our parents, teachers, friends, or even some philosophers. They portray good and evil as black and white, no middle ground. On paper, it seems easy to project what our ideas of humans, heroes, and villains are. It was recently that the idea of a three-dimensional villain hit pop-culture in the form of MCU and DC Villains like The Vulture, Killmonger, Thanos, and recently, Joker. This roster of complex “bad guys” aren’t contained in the West. Kimetsu no Yaiba, an uprising anime with an already significant cult following, further blurs the lines between good and evil by portraying demons as humanly as possible, “forcing” us to sympathize with them.
These people, aliens, and demons were not written as evil-to-the-bones. They are not traditional in a sense that we struggle to hate them because we can relate to them, we understand or at least can empathize with what they went through. But by the end of the film, we surrender to the reality that they were good people forced to commit evil things for the sake of something they perceived as good.
No one was born evil.

I have abandoned practice of my religion, Catholicism, yet I still firmly believe in some of its core teachings one of which is that man was born good as he was “made in the image and likeness of God.” Even if the God part was cut off you can still believe that man is born good. Think of a child after it is born. Sooner or later, it will cry and seek its mother to feed and that act is good for both since the child is looking to sate its hunger, while the mother is doing her role as one. In the strictest sense, this demonstrates how we are born good not simply by moral choices, but simply by being.
Marcus Aurelius, in a way, supports this claim when he wrote:
“We were born to work together like feet, hands and eyes, like the two rows of teeth, upper and lower. To obstruct each other is unnatural. To feel anger at someone, to turn your back on him: these are unnatural.”
He implies that humans are expected to work together, to do good to each other, and that to do differently would be unnatural, therefore not meant for us.
But if everyone was born good, how come evil exists? How come robbers rob, and at times, kill people? How come rapists violate their fellow people? How come drug lords, murderers are sometimes allowed to walk away as free men ordered by the courts, while the innocent ones are framed and sentenced to life imprisonment or even capital punishment? Why do these things happen if we were born “good”?
As a student of Stoicism, the reality of evil existing and humans as “innately” good beings were two things near irreconcilable for me. The whole Christian narrative of the God as the supreme good and the devil as an initially good creature turned into a being of pure malice, I admit, heavily influenced my understanding. Lately, however, I’m beginning to see palettes of colour beyond black and white thanks to the content that I consume, namely the aforementioned MCU movies and Demon Slayer, an anime and a manga.
Demon Slayer: Kimetsu no Yaiba
The rest of my “analysis” rely heavily on one’s knowledge about the manga/anime. Read the following for context.
Demon Slayer: Kimetsu no Yaiba, thrusts us into a world where there are people, demons, and demon hunters. Humans transform to demons after ingesting the blood of the demon daddy, Kibutsuji Muzan or demon Michael Jackson, granting them insane physical prowess, a near-immortal “life”, and the ability to rapidly regenerate body parts so long as their heads remain in tact. And when one gets lucky, it also gains special powers called “Blood Demon Arts” alongside a vampiric weakness to sunlight. It’s also important to note that these demons gradually lose the memories of their past human lives. Demon slayers on the other hands, are who their title suggests. They are normal human beings who stand against demons to protect humanity. The odds might seem against their favor but these same humans are trained to modify their breaths in a particular style which allows them to reach the peak physical condition of humans. This allows them to stand toe-to-toe against demons…for a time. After going through horrendous training needed to fight demons, demon hunters are given special blades which are the only alternative method of killing said creatures apart from sunlight.

In both manga and anime, we get a glimpse of who some demons were when they were still human after Tanjiro, our main protagonist, slices their heads off. These key moments are what sets apart Japanese artwork from the rest as the demons portrayed post-execution were humans who were mistreated by their parents, by society, hell even by the world, to the point that you almost couldn’t blame them for succumbing to Muzan’s offer for a “better “life””.
Good and Evil? Black and White?
I cannot blame you for still thinking that good and bad are as contrasting as black and white. Because to do so would mean I exact the same judgement to you. If you’re still here, be ready.
Rui – Lower Moon 5
For those of you familiar with Kimetsu no Yaiba, you would have hated this guy at the beginning. After all, how could we forgive anyone who’d dare separate Nezuko from her brother, Tanjiro? But as we watch in awe on how majestic the artists recreate the scene in the anime, we get to peer deeper into who Rui was in his previous life.

Rui was a Lower Moon demon. As you might expect, for one to possess a title for any kind of work meant he or she was someone of power. That applied to Rui, a young boy who turned to a demon. You’re probably wondering why he accepted Muzan’s offer, it’s because Rui suffered from a crippling disease which granted him such a frail body that walking and breathing were chores. As a result, and in a way, a “balance”, he was blessed with parents who loved him deeply and aided him in his short life. Put yourself in Rui’s place and imaging living 8 or more years in such condition. It’s only natural to feel some frustration over your body or even towards fate. This negative emotion, in my theory, is what attracted Muzan. He offered Rui the chance for a better “life”, and you might expect, he took it. Finally living his dream, Rui lived a “normal life” up until the hunger kicked in. His parents, after discovering Rui slew and ate someone in their home, decided to do what they thought was best: his father tried to kill him. Obviously failing, the young demon, in a fit of rage and of self-defense, killed both, thinking that his real parents wouldn’t do that. On her dying breath, Rui’s mother apologized to him for failing to give him a normal human body which would have prevented all of this from happening. From this point onward, Rui “lived” in denial and in desire to feel the love of a family, which explained why he did those things in the manga/anime.

Take all of that in. Now imagine once more that you are Rui. What would you have done? You were born with that disability, then one “man” offers a cure. You took it without being informed of the consequences. Will a loving God send you to hell for wanting to live a better life? If He did, was He loving to begin with at all?
Kokushibou – the shadow of the Sun

For those of you who have only watched the anime, Kokushibou is the samurai demon with six eyes and hanafuda earrings we see in the final episodes of season one. Yes, he is related to Tanjiro and to the breath of the Sun user. Skip to my third and final analogy if you don’t want spoilers about him.
Kokushibou and Yoriichi, the breath of the Sun user, were twins, the former being the older, and the latter, the younger. After being born, their father decided to execute Yoriichi after discovering he had marks on his face which were considered a bad omen. Their mother intervened and proposed that at the age of 10, Yoriichi would be sent to the temple for priesthood. This was the primary barrier which dictated the dynamics as siblings later on.
Kokushibou’s father raised him as a prodigy, the pride of his family. He set his child up for greatness which isn’t bad per se, but had definitely created a swollen ego in Kokushibou. But he was not a bad kid. In fact, he pitied his younger brother upon knowing the living circumstances he was in. Regardless if his pity was misplaced due to his ego, he showed concern for Yoriichi and gave him a bamboo flute, which the younger twin held onto for the rest of his life.
Thwarted by Fate.
During one of his sword training practices, Kokushibou saw Yoriichi watching them behind a tree. His trainer humoured and asked the younger twin if he wanted to train with them. After the trainer signalled him to attack, Yoriichi immediately overpowered him, something that Kokushibou had only dreamed of doing. His younger brother knocked the trainer unconscious while he couldn’t even land a hit on him. This was the beginning of Kokushibou’s fall. Despite being eclipsed, Kokushibou believed that with enough training and hardwork, he could reach Yoriichi’s level. However, one night, Yoriichi visited him to bid farewell before setting off to the temple but not before informing him that their mother had died from sickness. Kokushibou went to her room and discovered a journal which revealed his twin knew their lives would change the moment their father heard new of Yoriichi’s feat; he didn’t want to overshadow his older brother, so he headed into the temple even before reaching 10. Kokushibou saw this as a slap in the face. Not only was his brother physically superior to him, he had the heart to humble himself to not get in Kokushibou’s way!

Kokushibou is a real something. The complexities of his life are all too relatable to dismiss as mere fiction. It’s difficult to blame someone for the way they are once we get a glimpse of how he or she was raised as a child, because as we know, childhood years are the most formative for us. How we were raised determines the kind of person we turn out, given we are fortunate enough to live until that day. Try to other-ize and put yourself in Kokushibou’s geta and imagine your life’s entire foundation suddenly undermined. And despite training to his limits as as samurai and later on, as a demon, just to be on the same ground as his brother, it seemed that even Fate herself barred Kokushibou from reaching his dreams. There was nothing left for him to surpass as the universe prevented him to do so. Surely with minds to think, we can empathize and see where the man was coming from.
Akaza – the man whom the world turned into a demon

Yes, yes, I know it is impossible to turn a human into a demon without Muzan’s blood or Tamayo’s assistance. But for those who read the manga, you know exactly what I mean with my header.
Akaza spent his childhood taking care of his sickly father, 24/7. He didn’t even desire to play outside. He lived for his father. Selfless. But given their pitiful financial status, Akaza resorted to the only means available for him: crime. He pickpocketed people in order to buy medicine for his bedridden father, and on multiple occasions he had been beaten and reprimanded by the authorities. Eventually he was banished by the government as a criminal and tattooed his wrists as a symbol that people should stay away from him. Despite such, his spirit remained resilient and affirmed that he will continue what he does just to provide the medicine his father needed. Selfless.
He and his father lived in a small town. Given this and the multiple crimes he committed, it was only a matter of time before his old man knew what his child had been doing. He hung himself. Akaza’s father committed suicide not because of depression, but because of poverty and of willingness to free his son from further obligations to him. His last will for Akaza was:

“Live an honest life. You can still turn over a new leaf. I don’t want to live off of money that has been stolen from others. I’m sorry for being a nuisance.”
This would crush anyone’s spirit, and could even be the reason someone snaps and turns insane. Akaza almost did before he met Keizo.
Turning a new leaf
Keizo was like Tanjiro in that they both had warm smiles and a genuine personalities. Keizo offered Akaza the one thing he had been desperately seeking: a friend who saw his worth. He was such a genuinely kind man that he offered Akaza, a branded criminal, a new chance in life by working for his dojo and by taking care of his sick daughter, Koyuki. This was his opportunity to turn a new leaf and Akaza did not let it slip away. It was his chance to relive his past life in a decent manner by becoming Keizo’s only student working an honest job at his dojo, and taking care of yet another bedridden person, Koyuki. It is worth noting that Koyuki’s mother, committed drowned herself from the stress of taking care of her, something that never did once cross Akaza’s mind even before when taking care of his father, more so with Koyuki. That’s how resilient and wholesome an individual Akaza was.
A sick sense of humor
Becoming Keizo’s sole student, taking care of Koyuki, and being given the privilege to witness the day she finally recovered and live a normal life, fortune smiled on Akaza. She smiled more warmly and gave Akaza something he had never even dreamed of: to be loved by someone for who he is. Keizo sat down with him and asked if he could take over the dojo and take Koyuki as his wife. It was at that point that Akaza wanted to become stronger to protect his new family.
“Under peaceful conditions a warlike man sets upon himself.”
– Friedrich Nietzche
Fortune’s smile suddenly became perverse as it surpassed her ears. While Akaza visited his father’s grave to pay respects and to tell him of his new life, members of Keizo’s rival dojo poisoned his own dojo’s well, killing both father and daughter. Upon arriving and being informed of what happened, Akaza finally snapped. He murdered the 67 swordsmen of the rival dojo with his bare hands. His feat was so inhuman that the surviving maid from the dojo lost her mind and that historians thought it was mere fiction! The news of a “demon” spread like wildfire and eventually reached Muzan, who finally sealed Akaza’s transformation from a human reaching almost-demonic level to an actual demon.

As a demon, Akaza made it a rule to never consume women, something that is highly unusual since demons lose their memories after their transformation. He held a remnant of his humanity despite becoming a demon.
Are you bold enough?
A child plagued with crippling sickness. A man who’s life’s foundation crumbled. A boy trampled by fate. Are you bold enough to look at your reflection straight in the eye and say: “They could have done differently. They had a choice…”









