This allowed Gyomei and Sanemi to deliver the final blow on Kokushibo, killing him soon after. Unfortunately. Genya succumbed to his injuries and his body crumbled away as Sanemi held him. The Wind Hashira was distraught as he witnessed his brother die before his eyes.
As a result, Gyomei and Sanemi were able to deliver the final strike to Kokushibo, ultimately leading to his death. Unfortunately, Genya couldn't survive his injuries, and as Sanemi held him, his body disintegrated. The Wind Hashira was overwhelmed with grief as he watched his brother pass away right in front of him.
Demon Slayer: Kimetsu No Yaiba, Volume 20 continues as the Demon Slayer Corps' initial confrontation with the most powerful of Muzan's demons, Kokushibo, has left Tokito severely wounded and Genya cut in half.
The actual answer is a little more complicated, but essentially no, Genya is not a demon. According to the source manga: "Genya has a special ability. For a short amount of time, he can become a demon using his bite strength and his special digestive organs."
Genya was killed by the Upper Moon 1, Kokushibo, but not before helping the others take him down. As he was dying, his brother Sanemi regretted how strained their relationship have become, and wept as he begged the heavens to spare Genya. Like a demon, his body disintegrated as he died.
In the simplest terms, the reason that Genya can't use Breathing Styles stems from his inability to achieve the total concentration breathing that other demon slayers use in order to access their abilities.
No one killed Sanemi Shinazugawa. Sanemi almost died when he tackled his sister Genya from a window in order to protect her from a demon attack, but was saved by his friend Masachika who healed his wounds.
For a short amount of time, he can become a demon using his bite strength and his special digestive organs." Basically, as a result of his serious gnashers and iron stomach, Genya can devour demon flesh and gain characteristics like the sharpened fangs, frosted tips, and black pupils seen in the most recent episodes.
The only person who put his life on the line to save Genya was blamed and called a murderer. Such a backstory has surely traumatized the sibling duo. Genya is always angry at others because of everything he has gone through in his early life.
Towards the end of the book when the Darkling finds Alina, we find out that the Darkling unleashed nichevo'ya on Genya because she spared Alina. Her skin is scarred all over and she only has one eye left.
Genya remains loyal to the Darkling, but his nichevo'ya mutilate her when she betrays him to help Alina escape in Siege and Storm. She joins Alina and helps in taking the King down. She marries David Kostyk and becomes a member of the Grisha Triumvirate.
Genya Shinazugawa is the student of Tokyo High School and Sakura Igarashi's crush. He is also the Sanemi Shinazugawa's younger brother. He later snatches Demons Driver from Hikaru so, Genya can temporarily become Kamen Rider Over Demons to stop the chaos by Fenix & Demon Slayer Corps.
Genya uses his dying breaths to tell Sanemi that he wants Sanemi to be happy, that he didn't want him to die, and to tell his older brother that he thought of him as the nicest (sweetest in some translations) person ever; and lastly, thanks 'nemi.
Genya Shinazugawa serves as a significant supporting character during the Swordsmith Village Arc and sports one of the most feral personalities in all of Demon Slayer Corps.
The Mist Hashira, along with Gyomei, Sanemi, and Genya, fought the Upper Moon 1. While the group was able to defeat them, both Muichiro and Genya died due to the wounds inflicted by Kokushibo.
Demon Slayer's Genya Can Eat Demon Flesh
This allows him to temporarily gain demonic abilities, such as regeneration or heightened strength, making him immortal while in demon form.
Genya Shinazugawa is not a demon in the series. He is a human and utilizes his unique abilities to fight against demons and protect humanity. While Genya's ability to consume demon flesh may have raised questions, it is a result of an experimental procedure and not an indication of his demonic nature.
Sensing their despair, Doma offered a chance to him and turned both Gyutaro and Daki into demons.
Demon Slayer season 3 episode six did more than just give us some great action, it also showed us Genya's backstory. Similar to Tanjiro, Genya's family was torn apart by tragedy. His life was destroyed after his mother was turned into a demon and had to be killed by his older brother Sanemi.
Sanemi's seemingly relentless hostility towards Genya may actually be a manifestation of his protective instincts. He understands the harsh realities of their world as Demon Slayers and wants to shield his brother from experiencing the same pain and loss that they endured in their past.
Kyogo Shinazugawa (不死川 恭梧, Shinazugawa Kyōgo) is a minor antagonist in Demon Slayer: Kimetsu no Yaiba, but an important character to Sanemi Shinazugawa and Genya Shinazugawa, being their abusive father who is partially responsible for the wrathful personalities the two siblings have.
Tomioka Giyu = killed by Tanjiro Kamado. Tanjiro Kamado = killed by Nezuko kamado ( or another demon ) ; or executed for killing a hashira and have protected a demon. Nezuko Kamado = burned to sunlight , killed by a hashira , or eaten by Muzan Kibutsuji ( if she conquires the sun )
Shinobu Kocho is a capable Demon Slayer whose worthy of being the Insect Hashira. That being said, she's arguably the weakest Hashira when it comes to pure strength.
However, Giyu Tomioka does not marry anyone in Demon Slayer manga. While romantic subplots do exist in the series, Giyu's character arc focuses primarily on his growth as a warrior and his relationships with fellow demon slayers.