Upper Moon 4 was a character from the manga and anime series, Demon Slayer: Kimetsu no Yaiba. Upper Moon 4 was one of the twelve most powerful demons in the series, and was known for his ability to control sound waves and create powerful shockwaves.
In the series, Upper Moon 4 is killed by the protagonist, Tanjiro Kamado, and his allies. The events leading up to his death are as follows:
During the “Mugen Train” arc of the series, Tanjiro and his fellow demon slayers board a train that is believed to be connected to a demon who has been abducting and killing people. On the train, they encounter a group of demon slayers who are investigating the same case, including Kyojuro Rengoku, the Flame Hashira (one of the highest-ranking demon slayers).
As the train continues on its journey, the demon responsible for the abductions reveals himself to be Enmu, one of the Lower Moons of the Twelve Kizuki (the twelve most powerful demons). Enmu is able to put the demon slayers to sleep using his powers, and begins to feed on their dreams in order to gain strength.
During this time, Upper Moon 4, Hantengu, also appears on the train. Hantengu has the ability to split himself into multiple copies, each with its own distinct personality and powers. Hantengu uses this ability to take on the form of various demon slayers and confuse and manipulate them.
However, Tanjiro and his allies are able to fight back against Hantengu’s illusions and ultimately confront the demon himself. Tanjiro is able to use his sense of smell to detect the real Hantengu among his copies, and with the help of Kyojuro Rengoku and the other demon slayers, he is able to defeat the demon.
In the end, it is Tanjiro’s skill and determination, along with the support of his allies, that allows him to defeat Upper Moon 4. While Hantengu was a formidable opponent, Tanjiro’s unique abilities and his unwavering desire to protect others allowed him to emerge victorious.
It’s worth noting that the events leading up to Upper Moon 4’s death are just one part of the larger Demon Slayer: Kimetsu no Yaiba story. The series follows Tanjiro and his allies as they battle against the Twelve Kizuki and other powerful demons, each with their own unique abilities and motivations. Throughout the series, Tanjiro and his allies are forced to confront their own limitations and weaknesses, as well as the moral complexities of their mission to eliminate demons.
In conclusion, Upper Moon 4, Hantengu, was killed by Tanjiro Kamado and his allies during the “Mugen Train” arc of Demon Slayer: Kimetsu no Yaiba. The battle was a test of Tanjiro’s abilities and determination, as well as a showcase of the unique powers and abilities of the various characters involved.