Muzan Kibutsuji is a fictional character from the popular anime and manga series, “Demon Slayer: Kimetsu no Yaiba”. He is the main antagonist of the series and is known as the “Demon King”. Muzan is a powerful demon who is responsible for turning many humans into demons and has been alive for over a thousand years.

Muzan does indeed have a daughter in the series named Nezuko Kamado. However, Nezuko is not his biological daughter but rather his adopted daughter. Muzan transformed Nezuko into a demon after killing her family, but she retained some of her humanity and became a unique demon with the ability to resist Muzan’s commands.
Nezuko is one of the main characters of the series and is the younger sister of the protagonist, Tanjiro Kamado. She has become a fan-favorite character due to her kind-hearted nature and her determination to protect her brother and friends despite being a demon.
Throughout the series, Muzan is constantly seeking Nezuko’s elimination as she poses a threat to his authority and power. However, Nezuko’s strength and unique abilities make her a valuable asset to Tanjiro and his demon-slaying team as they work to defeat Muzan and his minions.
In conclusion, Muzan Kibutsuji’s daughter in “Demon Slayer: Kimetsu no Yaiba” is Nezuko Kamado, his adopted daughter whom he transformed into a demon. Nezuko is a major character in the series and plays an important role in the fight against Muzan and his demon followers.