The Blue Spider Lily medicine was also the cause behind Muzan's demonification, granting him a strong body and changing his blood to have transformative properties, enabling Muzan to create more of his kind as well as hold dominion over them.
It was then that Muzan realized the medicine actually had effect: he obtained a strong body, but due to the medicine being a prototype, he consequently could not walk into the sunlight and crave human flesh, turning him into a Demon.
This flower has many different meanings in different cultures. In China, the blue spider lily symbolizes death and mourning. This is because the flower often blooms in cemeteries and on gravesites. In Japanese culture, this flower is used to ward off evil spirits.
So according to the canon Demon Slayer Fan book. Tanjiro's mother actually knew the location of the blue spider lily. Also, she took tanjiro there when he was a kid. and this is why tanjiro sees it when his life flashes before his eyes when fighting Rui.
Nezuko's Sunlight Immunity in Demon Slayer is Tied to the Blue Spider Lily. Nezuko having eaten the Blue Spider Lily at some point could explain her immunity to sunlight, and Demon Slayer: Kimetsu no Yaiba has already worked to justify that.
Since Nezuko is from a Sun Breathing lineage, she can survive in daylight. After the final battle against Hantengu concludes, she can step into daylight, and many theories are available about the phenomenon. One of the theories is that her abstinence from consuming human blood is what saved her.
After all, she would be the second ingredient he needs to achieve his long-sought-after goal. However, since the Blue Spider Lilly was found to only bloom during the day, that may explain why Muzan never found them after spending so long looking.
Black Spider is also quite abundant with up to 5-7 flowers per stem - a great floral show is guaranteed! Blooming in early-mid summer, this Lily constitutes an excellent border plant, providing striking color and contrast to the perennial border and mixes beautifully with annuals and other summer flowering bulbs.
Its roots are used to treat swellings, ulcers, and the nervous afflictions of children. The bulb is used to counteract poisons and can be made into a plaster to treat burns and scalds. Additionally, Red spider flower contains alkaloids that are associated with anticancer, antibacterial, and antiretroviral properties.
This is shown in one of the last chapters of the manga when Muzan is dying. He shows his most human side to fans, wherein he admits to regretting murdering his doctor. He comments that had he been patient, the doctor would have cured him, and he would never have turned into a demon.
In a nutshell, Muzan, being the progenitor of demons, is not scared of Doma. However, he is irritated by his inability to decipher Doma's thoughts and feelings, which is the ultimate control he has over all of his creations. Upper-Rank Two: Doma is a nihilistic maniac and a misanthropic cold-blooded demon.
Thus, Muzan created demons for hundreds of years even when he didn't want to turn someone. Since he didn't know anything about the Blue Spider Lily medicine, he needed others to find the plant for him by happenstance. This is the general reason why Muzan turned Nezuko into a demon.
Muzan Kitbutsuji as seen in Demon Slayer (Image via Ufotable, Inc.) Thus, he keeps a human wife and child to make it easier for him to fit into society without raising suspicion. Not only that, it helps increase his social standing. Nonetheless, this is just speculation as no concrete answer is available.
Kie Kamado knew where the Blue Spider Lilies were blooming, and showed them to Tanjiro Kamado when he was very young. That's what made Tanjiro indirectly know about this flower in his memory.
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.
Swamp lily (Crinum pedunculatum), 1790s
There are five species of Swamp lily native to Australia. Swamp lilies are also known as River, Mangrove or Spider lilies.
Lycoris radiata, known as the red spider lily, red magic lily, corpse flower, or equinox flower, is a plant in the amaryllis family, Amaryllidaceae, subfamily Amaryllidoideae. Originally from China, Japan, Korea and Nepal and from there to the United States and elsewhere.
Red Spider Lily, also known as Lycoris radiate, is a late-summer bloomer that thrives in zones 5-10. It is deer resistant and fragrant, making it a must have in the garden and cut for unique summer bouquets. Strap-shaped green leaves.
Who does Muzan regret killing? He shows his most human side to fans, wherein he admits to regretting murdering his doctor. He comments that had he been patient, the doctor would have cured him, and he would never have turned into a demon.
The two known demons who broke free of Muzan's curse are Tamayo and Nezuko. Tamayo was able to break free of the condemnation when Yoriichi fought Muzan, nearly killing him in the process.
In truth, he is desperately looking for a rare flower blue spider lily. Even after centuries, Muzan never gave up in his search for it. However, the flower is so rare that he never even got a hint as to where to find it. This flower is significant to the series as it appears in the outro of Season 1.
Secondly, Muzan would probably… eat Nezuko and Tanjiro in the hopes of obtaining their sun-resistance abilities, and also since he wouldn't be able to convince them to become demons to work under him. This would allow him to become the ultimate demon.
Normal demons are like vampires where they can only roam in the night because the sunlight burns them to a crisp. Nezuko isn't like other demons, which is how she was given the name "The Chosen Demon." The reason behind this is because unlike other demons, she can actually walk in the sunlight without getting burned.
At the end of the Swordsmith Village Arc, Nezuko's evolution completes, and she becomes the only demon that can survive in sunlight. At that point, she regains the ability to speak.