- Kokushibo is a Level 1 Devil, the position holder Upper Moon 1, the strongest demon after Muzan Kibutsuji.
- Main strengths: Moon Breathing (Tsuki no Kokyu), crescent blade attacks and extreme regeneration are almost invincible.
- Living almost 500 years, hundreds of years of combat experience has made him able to read his opponent's movements and defeat many. Hashira.
- Defeated in Infinity Castle Arc by the combination Gyomei Himejima, Sanemi Shinazugawa, Muichiro Tokito, and Genya Shinazugawa.
Profile of Kokushibo, a Level 1 Demon in the anime Demon Slayer
In anime and manga In Demon Slayer: Kimetsu no Yaiba, the term "rank 1 demon" is often associated with Upper Moon 1. This character is known as the most powerful demon among the Twelve Kizuki and poses the greatest threat to demon slayers.
The first-rank demon is Kokushibo, a legendary figure who lived for nearly 500 years. With incredible strength and deadly sword techniques, he is one of the most terrifying characters in the Demon Slayer series.
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- Kokushibo's Abilities, The Strongest Demon Moon
- Get to know Kokushibo Demon Slayer
Who is a Level 1 Devil?

If you're wondering who the first-rank demon in Demon Slayer is, the answer is Kokushibo. He holds the rank of Upper Moon 1, the highest rank in Muzan Kibutsuji's elite group of demons. This rank makes him the most powerful demon after Muzan.
Kokushibo He's no ordinary demon, as he has extensive fighting experience. For nearly five centuries, he's faced numerous Hashira from various generations.
It's no wonder his name is so feared in the demon slayer world. Even many Hashira have difficulty surviving when faced with him.
Kokushibo's Main Strength

As a Level 1 demon, Kokushibo possesses abilities far beyond those of other Upper Moons. His primary technique is Moon Breathing, or Tsuki no Kokyu, a deadly sword fighting style derived from legendary sword skills combined with the power of demon blood.
Each of Kokushibo's attacks produces a crescent-shaped slash that is incredibly difficult to avoid. His attacks are fast, wide-ranging, and can destroy an opponent in a matter of seconds.
In addition, his regeneration ability is also very terrifying so that his body can recover quickly even though he suffers serious injuries.
Not only that, Kokushibo is also known as the most respected leader of the Upper Moon group. His aura and power earn him immense respect from other demons. Even some high-class demons seem afraid to speak to him due to the vast difference in power.
Another of Kokushibo's strengths was his ability to read his opponent's movements. With hundreds of years of combat experience, he could quickly analyze enemy attack patterns. This was why many Hashira failed to defeat him in one-on-one combat.
Kokushibo's Final Battle

Kokushibo's death was one of the most epic moments in Demon Slayer's Infinity Castle Arc. This battle, which took place in chapters 171 to 177 of the manga, featured a brutal duel between Kokushibo and four powerful demon slayers.
The four characters facing the Level 1 demon are Gyomei Himejima, Sanemi Shinazugawa, Muichiro Tokito, and Genya Shinazugawa. They must work together because Kokushibo's power is too great to be fought alone.
In the battle, Kokushibo dominated the battle with his incredible sword skills. Even the Hashira were severely injured by his attacks. Muichiro and Genya also had to sacrifice themselves to create an opening to stop the demon.
The most crucial moment occurred when Kokushibo's head was successfully severed. However, like any powerful demon, he attempted to regenerate and survive. However, a combined attack from Gyomei, Sanemi, Muichiro, and Genya ultimately halted the regeneration process.
Kokushibo's death wasn't just due to the Hashira's power, but also to his own inner conflict. After seeing his monstrous form, Kokushibo began to lose his reason for living. This weakened his powers until his body finally collapsed completely.
Many Demon Slayer fans consider Kokushibo to be one of the best villains in the series. His character design is unique, with six menacing eyes and a powerful samurai aura. Furthermore, his background also gives him greater depth than other demons.
Many fans love Kokushibo's fighting style, as it's both elegant and deadly. His Moon Breathing Technique is also considered one of the coolest abilities in Demon Slayer. For this reason, searches for the level 1 demon remain extremely popular online.
In the end, Kokushibo is indeed worthy of being called the strongest level 1 demon in the world. Demon Slayer. With hundreds of years of experience, the Moon Breathing technique, and incredible regenerative powers, he is a nearly unbeatable opponent.
Also read:
- 5 Facts about Muichiro Tokito that will surprise you
- Profile and Interesting Facts About Genya Shinazugawa
- 16 Interesting Facts About Tamayo Demon Slayer
Even though he finally died in the Infinity Castle Arc, Kokushibo's figure is still remembered as one of the characters villain most iconic in the anime world.
Demon Slayer Tier 1 Demon FAQ
The first-rank demon in Demon Slayer is Kokushibo. He is Upper Moon 1, the strongest demon in the Twelve Kizuki after Muzan Kibutsuji.
Kokushibo's ultimate power is Moon Breathing (Tsuki no Kokyu). This technique combines advanced sword skills with the power of demon blood, producing a devastating crescent moon attack.
Kokushibo is known to have lived for nearly 500 years. During that time, he has fought numerous Hashira from various generations in the Demon Slayer: Kimetsu no Yaiba series.
Kokushibo was defeated by the combined forces of Gyomei Himejima, Sanemi Shinazugawa, Muichiro Tokito, and Genya Shinazugawa in the Infinity Castle Arc.
Kokushibo is considered extremely powerful due to his hundreds of years of fighting experience, incredible regeneration abilities, deadly sword techniques, and speed that is difficult for ordinary Hashira to match.
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