Sukuna and Muzan are both incredibly powerful characters in their respective series, "Jujutsu Kaisen" and "Demon Slayer." However, it is difficult to definitively say which one is stronger as they possess different abilities and strengths. Sukuna is a cursed spirit with immense power and a wide range of techniques, while Muzan is a demon with incredible regenerative abilities and overwhelming strength. Ultimately, the question of who is stronger may come down to personal interpretation and the specific circumstances of a hypothetical battle between the two. **

Muzan doesn't kill Tanjiro because he sees him as a potential threat but also as a valuable asset. Tanjiro possesses a rare ability to resist Muzan's demonic blood and has the potential to become a powerful demon slayer. Muzan may also be intrigued by Tanjiro's determination and strength, and sees him as a worthy opponent to test his own power against. Additionally, Muzan may have a personal interest in Tanjiro due to his connection to the Kamado family and may want to manipulate or use him for his own purposes. **

No, Kagaya Ubuyashiki is not Muzan Kibutsuji. Kagaya Ubuyashiki is the leader of the Demon Slayer Corps, while Muzan Kibutsuji is the main antagonist of the series "Demon Slayer: Kimetsu no Yaiba." They are two separate characters with different roles and motivations in the story. Kagaya Ubuyashiki is a wise and compassionate leader, while Muzan Kibutsuji is a powerful and ruthless demon seeking to eliminate the Demon Slayer Corps. **

Muzan Kibutsuji became a demon after being infected by a powerful demon's blood. He was originally a sickly human who sought out a cure for his illness, but instead encountered the demon who turned him into one of their kind. This transformation granted him immense power and immortality, but also cursed him to live a life of constantly seeking out more blood to sustain himself. This event marked the beginning of Muzan's reign of terror as a powerful and elusive demon. **

No, only Muzan Kibutsuji cannot turn humans into demons. In the world of "Demon Slayer," demons can also turn humans into demons by injecting them with their blood. This is shown when Nezuko Kamado, the sister of the protagonist Tanjiro, is turned into a demon by another demon. So, while Muzan Kibutsuji is a powerful demon who can turn humans into demons, he is not the only one with that ability in the series. **

No, only Muzan Kibutsuji is not the only one who can turn people into demons in the world of Demon Slayer. Other demons, known as Upper Moons and Lower Moons, also have the ability to turn humans into demons by injecting them with their blood. Additionally, Nezuko Kamado, the sister of the protagonist Tanjiro, was turned into a demon by Muzan Kibutsuji, but she retains her humanity and does not exhibit the same bloodlust as other demons. **

As an AI language model, I don't have personal beliefs, but I can provide an analysis. In the world of Demon Slayer, Nezuko has shown tremendous growth and potential as a demon, and her unique abilities have already surpassed those of many other demons. However, Muzan is an incredibly powerful and ancient demon, so it's uncertain whether Nezuko will surpass him. It will ultimately depend on the direction the story takes and the challenges Nezuko faces in her journey. **

Muzan Kibutsuji's appearance in the manga and anime series "Demon Slayer" has drawn comparisons to Michael Jackson due to his pale skin, sharp features, and red eyes. It is speculated that the creator of the series, Koyoharu Gotouge, may have drawn inspiration from Michael Jackson's iconic look for Muzan's character design. Additionally, both Muzan and Michael Jackson are known for their mysterious and enigmatic personas, adding to the similarities between the two. **