Upper Moon 6, from Daki & Gyutaro to Kaigaku
If you like anime Demon Slayer: Kimetsu no Yaiba, you're probably familiar with the term Upper Moon or Upper Moon Devils. They are the elite troops Muzan Kibutsuji which is very strong and is the main threat to demon hunters.
Of all the members, the Upper Moon 6 are among the most discussed due to the dramatic roles of Kaigaku and Daki & Gyutaro.
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In this article, we will discuss in detail about it, why Kaigaku can hold this position, why Zenitsu really hate him, and who is the strongest Upper Moon.
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Who are the Upper Moon 6?

The Upper Moon 6 are one of the elite members of the Upper Moon Demons who are under the direct command of Muzan Kibutsuji in the anime. Demon Slayer: Kimetsu no Yaiba.
This position was originally held by Daki and Gyutaro, a pair of brothers who fought together and whose powers complemented each other.
They are known as demons who operate in the Entertainment District and managed to trouble Uzui Tengen and the main protagonist trio until they were finally killed.
After the defeat of Daki and Gyutaro, the position of Upper Moon 6 was replaced by Kaigaku, a former student of Lightning Breath who betrayed and chose to become a demon for power.
Kaigaku entered the ranks of the Upper Moon because Muzan saw great potential in him as a lightning technique user, although in real combat he is still far from the standards of the strongest Upper Moon.
Why is Kaigaku the Upper Moon?

Kaigaku became the Upper Moon 6 due to his immense ambition and refusal to accept defeat. As a former student of the Lightning Hashira, Jigoro Kuwajima, Kaigaku actually possessed great potential in the Lightning Breath technique, but envy and selfishness led him to choose the wrong path.
When he almost died, Kaigaku surrendered himself to Muzan Kibutsuji for strength, instead of continuing to fight as a human.
Muzan saw the ambition and hatred within Kaigaku as something suitable to be developed, especially after the vacancies left by Daki and Gyutaro.
Therefore, Kaigaku was given Muzan's blood and was immediately placed as an Upper Moon 6, even though his powers were not yet fully mature like the other members of the Upper Moon Demon ranks.
Zenitsu hates Kaigaku because he feels Kaigaku's betrayal is not only against humans, but also against his principles as a demon hunter.
Since their training, Kaigaku has always looked down on Zenitsu and considered him weak and unworthy of being a lightning disciple. The peak of hatred came when Kaigaku chose to become a demon for power and caused their teacher, Jigoro Kuwajima, to feel like a failure to the point of committing suicide. seppuku.
Zenitsu saw this as an insult to his teacher's sacrifice. Furthermore, upon reuniting on the battlefield, Kaigaku even blamed Zenitsu for his teacher's death, further inflaming Zenitsu, who felt Kaigaku had no sense of honor or responsibility.
Who is the strongest Upper Moon?

In the Upper Moon demon ranks, Upper Moon 1 is Kokushibo considered the strongest. He possesses not only extraordinary physical strength and fighting prowess, but also extensive experience as the oldest demon after Muzan.
Kokushibo was originally a human and even a very talented demon slayer, as well as the twin brother of Yoriichi Tsugikuni, the strongest human in Demon Slayer history.
Armed with technique Breath of the Moon combined with demonic powers, Kokushibo was able to match multiple Hashira at once.
Although other Upper Moons such as Doma or Akaza Although extremely powerful, they remain one level below. Because of this, the Upper Moon 1 rank has always been recognized as the pinnacle of power among demons, surpassed only by Muzan himself.
The Upper Moon 6 may not be the strongest, but the story behind Kaigaku's character provides an emotional layer to Demon Slayer, especially for Zenitsu. Their conflict isn't just about power, but also about principles, respect, and sacrifice.
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If you like Zenitsu, this part of Kaigaku is a must-read. And when it comes to power, no one can match Kokushibo in the Upper Moon ranks except Muzan himself.
