By the end of Demon Slayer, Zenitsu reaches the Hinoe rank, the second-highest rank below Hashira, having proven his strength by defeating an Upper Moon demon (Kaigaku) on his own, a feat that showcased his incredible speed and skill with his unique Seventh Form of Thunder Breathing.
Later on, he could keep up with and battle the Demon King, Muzan Kibutsuji, albeit while severely weakened by the Anti-Kibutsuji Drug. Nonetheless, Zenitsu's strength more than likely matched that of the Hashira by the end of the series.
There are a total of 10 ranks in the Demon Slayer Corps. The lowest rank is Mizunoto, then it goes up to Mizunoe, Kanoto, Kanoe, Tsuchinoto, Tsuchinoe, Hinoto, Hinoe, and Kinoto. The highest rank is Kinoe.
Demon Slayer enthusiasts are buzzing about the connection between Tanjiro Kamado and the formidable Upper Moon One, Kokushibo.
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.
The top 10 strongest characters in Demon Slayer, generally agreed upon by fans, feature legendary figures like Yoriichi Tsugikuni (the progenitor), Muzan Kibutsuji (Demon King), and the powerful Upper Ranks: Kokushibo, Doma, and Akaza, alongside the strongest Hashira like Gyomei, Sanemi, Giyu, and emerging powerhouses like Tanjiro (especially as the Demon King) and Nezuko, though rankings vary.
As the highest-ranking member of the Twelve Kizuki, Kokushibo is an extraordinarily powerful demon, second only to the Demon King Muzan Kibutsuji himself. He has battled countless Demon Slayers and has amassed vast experience and knowledge over his nearly 500-year-long life.
Most scholars understand the text to mean that demons originate from the evil spirits of the deceased giants, cursed by God to wander the Earth.
Tanjiro Kamado
His kisses are usually placed on your lips and forehead. Because he is young and inexperienced, he's still not down for french kissing and whatnot. He also likes tightly hugging your waist and pulling you closer to him when you kiss.
What rank is Nezuko? Since Nezuko isn't a part of the Twelve Kizuki, she doesn't get a demon rank. She does however have her own demon blood art, as well super-fast reflexes and the ability to grow and shrink in size.
Inosuke Hashibira
He typically wears the head of his deceased boar mother as a mask. Despite his brutish exterior, he is a highly capable combatant. He eventually becomes a close ally to Tanjiro and his companions. Following the disbandment of the Demon Slayer Corps, he marries Aoi Kanzaki.
Zenitsu Agatsuma is the only character to solo-kill an Upper Moon without having a Demon Slayer Mark or the rank of Hashira. While most upper-rank demons required teamwork, power-ups, or tragic sacrifices, Zenitsu pulled it off all on his own against Upper Moon Six, Kaigaku.
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.
With the help of Zenitsu and Tanjiro, Inosuke was able to run up to Daki and decapitate her before she could react; later in the battle, he also managed to dislocate his heart in time to avoid a fatal surprise stab from Gyutaro.
Several breeds of demons are known to reproduce through normal pregnancy. Demonic Children are the pure evil offspring of upper-level demons, presumably born through regular childbirth. Certain demons are known to reproduce with mortals in order to give birth to hybrids.
Angels - Angels are capable of overpowering and smiting most demons. Higher ones can kill even the oldest demons. It is unknown if regular Angels can kill Knights or Princes, although this seems unlikely, as angels have been overpowered in many confrontations with them.
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.
While many Hashira died in the fight, some survived: Giyu Tomioka, the Water Hashira, and Sanemi Shinazugawa, the Wind Hashira, both survive the final fight, carrying on the memory of their fallen comrades. Tanjiro also survives, and after the war, the Demon Slayer Corps disbands because demons are gone for good.
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.
Akaza's original human appearance as Hakuji at the age of 18.
Sanemi and Obanai rank low as their actions and abrasive personalities make them less likable. Giyu and Kyojuro are the most well-liked Hashira due to their protective and warm nature.
As the former Water Hashira, he was once one of the Demon Slayer Corps' most powerful fighters. He singlehandedly captured and imprisoned the Hand Demon on Mt. Fujikasane, a notable feat considering the presumed challenge of disabling the powerful demon without killing it.
All known Breathing Styles within the Demon Slayer storyline are more or less derived from Sun Breathing, the first one ever created. Thus, it is safe to assume that Sun Breathing is the strongest Breathing technique in the series.