Kibutsuji Muzan

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 Alignment | Neutral Evil

**Muzan Kibutsuji** is the main antagonist of the popular manga and anime Kimetsu no Yaiba

## Background

Muzan was born in Japan's Heian era, to a constant struggle to survive on account of his frailty. His heart stopped multiple times in his mother's womb, and when he first entered the world, he was deemed stillborn, having no pulse and not breathing. When he was taken to be cremated, he escaped death by releasing his first cries.

Throughout his young life, he struggled with illnesses and that led to his thanatophobia. As a young man, Muzan was diagnosed with a disease that would kill him before he reached the age of 20. The doctor treating Muzan gave him a special experimental medicine, but it appeared to have failed. Enraged by his worsening condition, Muzan killed him. However, it was only after killing the doctor did he realize that the medicine was actually working and had helped him acquire a strong body. He realized he needed to consume the flesh of humans to survive but was not bothered by this fact. His new, more serious problem on the other, was his inability to walk in the sunlight, as doing so burned him severely.

It was during this moment that he truly regretted killing the doctor before he could have finished his treatment with his "Blue Spider Lily" medicine. He searched the entire country for the flower, but couldn't find it. Due to this, Muzan started to create more Demons and planned to spread them in the world, hoping that one of them would eventually find a way to overcome the sun or at least help him on his quest to find the Blue Spider Lily. This desire to be in the sun again became his one true goal and he spends hundreds of years chasing this obsession. In his early years as a Demon, Muzan settled down with five different women. However, because of his lack of empathy and sensitivity as a demon, he verbally abused all five of his wives to the point it drove them all to commit suicide.

In time, Muzan eventually succeeded in creating his faction, which would eventually become known as the Twelve Kizuki. He transformed multiple demons and gave them the chance to join his group, rewarding them with a larger share of his blood to make them more powerful. Split into two groups of six known as the Upper Moons and Lower Moons, the Uppers remained unchanged for centuries. The Lowers on the other hand, constantly changed as they were frequently killed by the Demon Slayers, to his growing disappointment. The Kizuki who he personally transformed were Kokushibo, Akaza, an apathetic cult leader, a prolific and heinous criminal sentenced to death, a dying murderer, a frail young boy and a young man who he initially devoured but eventually transformed. More demons would eventually join, such a brother and sister, a twisted and murderous musician and a former Demon Slayer.

During the Taisho Era, Muzan was able to locate the Kamado family who were keepers of the Sun Breathing technique. When Tanjiro Kamado was away at town, Muzan attacked his family and proceeded to inject them with his blood, hopeful that he could create a Demon who could withstand the sun. However, he was disappointed when the family died from his blood's poison, believing that creating a sunproof Demon was not so easy after all. He left their home seemingly unaware that there was a survivor, Nezuko Kamado, who later turned into a Demon.