No, Muzan's daughter shown with him (Aka in the manga/anime) is not his biological child; she's part of a human family Muzan infiltrated by killing the real father and impersonating him to hide among humans, using them as a temporary disguise, as demons can't naturally procreate with humans. He doesn't truly care for them and uses them as a cover, though what happens to them after the Asakusa Arc isn't fully detailed.
Shiko Kibutsuji (鬼舞辻 死子, Kibutsuji Shiko?) is Muzan Kibutsuji and Enmu Kibutsuji's eldest daughter and the youngest of their two children. She is currently their only biological child.
Ubuyashiki family
He is a distant relative of Muzan, resulting in his bloodline being cursed with a disease that slowly kills them before reaching their thirties due to their connection with Muzan's blood.
He's been adopted by a wealthy couple without children of their own, who dote on him as if he were their biological son. The adoptive father runs a pharmaceutical company, suggesting that Muzan has infiltrated this family to pursue his goal of creating a drug to overcome his weakness to sunlight.
A giant baby just so happens to be one of the more effective ways to do that. While Kibutsuchi is trying to survive with this form, he's also using it to demonize Tanjiro and turn him into the new Demon King. By turning into an infant Muzan is visually symbolizing his rebirth as Tanjiro.
Demon Slayer enthusiasts are buzzing about the connection between Tanjiro Kamado and the formidable Upper Moon One, Kokushibo. While not directly related, Tanjiro is seen as the spiritual successor to Yoriichi Tsugikuni, Kokushibo's twin.
Kaigaku was a former Demon Slayer and Zenitsu Agatsuma's senior disciple under the former Thunder Hashira, Jigoro Kuwajima. However, sometime during the Hashira Training, Kaigaku went on a mission and encountered Upper Rank One, Kokushibo, quickly surrendering to him to save his life and later becoming a demon.
Tanjuro Kamado ( 竈門 かまど 炭 たん 十 じゅう 郎 ろう , Kamado Tanjūrō?) was the husband of Kie Kamado and the late father of Tanjiro and Nezuko Kamado.
Also the reason why Nezuko was already so powerful is because Muzan injected tons of blood in her body and the others in hopes of creating a demon that could conquer the sun.
Muzan Kibutsuji: The ultimate unkillable demon king
Muzan's real scary gimmick isn't his power, but the fact that he can't die from a head cut-off. Even when the most powerful Hashira—Gyomei Himejima—does succeed in beheading him, Muzan absurdly regrows his head in an instant.
At the end of Season 2, Episode 12, there's a short scene that explains why Tengen has three wives, a trio of kunoichi named Makio, Suma, and Hinatsuru. Tanjiro tells the audience that Tengen's family practices polygamy, the custom of having more than one spouse at a time.
Tanjiro and Muichiro are not directly related by blood While they share a common ancestor in Yoriichi Tsugikuni, the legendary swordsman who created Sun Breathing, their lineages diverge from there Tanjiro's lineage – Tanjiro is descended from Sumiyoshi Kamado, a friend of Yoriichi – Yoriichi gifted Sumiyoshi his ...
The only canonically LGBTQ+ character in Demon Slayer is Suma, one of Tengen Uzui's wives, who is confirmed to be bisexual and polyamorous in the series' databooks, showing affection for both men and women, including Tengen and her fellow wives, Makio and Hinatsuru. While other characters like Mitsuri are speculated to be queer, Suma is the sole officially confirmed character, with her relationship dynamic highlighting both bisexuality and polyamory within the Demon Slayer Corps.
Nakime, Daki, Mukago, and Ubume are the only known members of the Twelve Kizuki who are female. Gyutaro and Daki are the only members who are biologically related to each other, as they are brother and sister. Kokushibo and Kaigaku are the only members who were formerly Demon Slayers.
In Chapter 205, we see Obanai and Mitsuri reincarnated and married, as they promised before they died, and they are running a restaurant together. In the volume extras it is revealed that they have five kids.
Yes, Tanjiro lived past 25, marrying Kanao Tsuyuri, having children, and dying of old age, proving he was an exception to the 25-year lifespan curse of the Demon Slayer Mark, likely due to his Sun Breathing lineage and being the successor to Yoriichi Tsugikuni, notes ComingSoon.net and this YouTube video. While Muzan predicted his early death due to the mark, manga epilogues show Tanjiro surviving and living a full life, unlike other marked Demon Slayers like Giyu and Sanemi who died at 25, according to discussions on Reddit, Quora, and this Reddit post, confirms this Reddit post.
Muzan Kibutsuji's motivation to kill Tanjiro's family was to create a demon immune to sunlight, fulfilling his desire to be unstoppable. Nezuko's transformation into a demon immune to sunlight ultimately backfired on Muzan, leading to his ultimate downfall in Demon Slayer.
Although Muzan had never met Tanjiro before then, he knew immediately that he needed to eliminate him after recognizing the hanafuda earrings he wore to be the ones his would-have-been killer previously donned, as later revealed.
There's no single "worst" character, as it's subjective, but top contenders for hated or disliked characters often include the sadistic demon Doma (Upper Rank Two) for his cruelty and killing of Shinobu's sister, Muzan Kibutsuji for being the source of all evil, and sometimes Kaigaku, a traitorous Demon Slayer, with some viewers finding Zenitsu annoying due to his constant screaming, though many defend him.
Kaigaku, Zenitsu's former Thunder Breathing classmate, is the weakest of the Upper Moons. Despite his impressive speed and combat versatility, he lacks experience with his Blood Demon Art. He is placed as the current Upper Moon 6 after the defeat of Gyutaro and Daki.
Despite his numerous achievements and growing strength, he never attains the coveted rank of Hashira with the Demon Slayer Corps. This deliberate narrative choice by the creator serves to enhance his story in the face of overwhelming adversity. Becoming a Hashira in the Corps is no easy task.
Muzan has always been a rational character, but fans believe killing his doctor is the only time he regretted taking a life.
After creating the first demon, Lilith, Lucifer created the four Princes of Hell as the first generation of demons aside from Lilith. Lucifer created them himself before the oceans drank Atlantis. These demons were Lucifer's rightful successors to the throne of Hell and acted as generals of the demonic forces.