Unveiling a Tantalizing Mystery Never Covered in Demon Slayer's Manga!

The mystery of Nezuko's immunity to sunlight in Demon Slayer: Kimetsu no Yaiba season 3 has finally been addressed. In the "Swordsmith Village" arc's conclusion, it is revealed that Nezuko is unlike other demons and cannot be killed by sunlight. This revelation leads to her becoming the focal point of the final arc, as Muzan desires her immortality to obtain the same immunity. Surprisingly, the manga never explains why Nezuko possesses this unique trait, leaving fans with one of the series' biggest unanswered questions.

However, the anime adaptation of Demon Slayer may have provided an answer. In the season 3 finale, Tamayo is depicted analyzing Nezuko's blood, revealing that it contains blue elements. This is significant because the Blue Spider Lily possesses the power to cure Muzan's weakness to sunlight. Therefore, it is possible that Nezuko's immunity stems from the Blue Spider Lily, as suggested in one of the databooks. This revelation not only explains a major twist in the series but also adds irony to Muzan's ultimate failure.

Nezuko's Sunlight Immunity in Demon Slayer is Tied to the Blue Spider Lily

Nezuko's immunity to sunlight could potentially be explained by her consumption of the Blue Spider Lily. The second official databook reveals that the flower bloomed near the Kamado family's residence, and Tanjiro's mother even showed him its location. Although it is stated that Tanjiro was the only child to witness the blooming, it does not rule out the possibility that Nezuko also saw and consumed the flower at some point. This consumption could have ultimately resulted in her immunity to sunlight as a demon. A similar explanation could also shed light on one of the final twists in the Demon Slayer: Kimetsu no Yaiba manga. Moments before his demise, Muzan turned Tanjiro into a demon as a desperate attempt to preserve his legacy. Similar to Nezuko, Tanjiro exhibits immunity to sunlight with limited explanation, merely attributed to being Nezuko's brother. However, if we consider the theory that Nezuko's immunity stems from consuming the Blue Spider Lily, it is plausible that Tanjiro's immunity can be explained in the same manner. This would bring a greater sense of coherence to what were previously poorly elucidated plot twists.

Demon Slayer’s Blue Spider Lily Makes Muzan’s Failure Even Better

The revelation of the Blue Spider Lily's blooming pattern sheds light on Nezuko's immunity to sunlight and further emphasizes Muzan's failure. In the concluding chapter of Demon Slayer: Kimetsu no Yaiba, it is disclosed that the Blue Spider Lily only blossoms a few times a year in daylight, making Muzan's centuries-long search for it an impossible endeavor. This irony becomes even more pronounced if Tanjiro and Nezuko truly obtained the power Muzan coveted through their humanity, which he despised.

This irony serves to highlight Muzan's major flaw throughout the series: his complete disdain for humanity. Muzan never comprehended the value of humanity, and unlike other demons, he carried his hatred to his grave as his final plan crumbled before him. Therefore, if Tanjiro and Nezuko managed to survive partly due to their possession of the Blue Spider Lily, which was only possible because of their humanity, this point is further emphasized. This adds significant depth to Demon Slayer: Kimetsu no Yaiba, with the anime's clearer explanation of Nezuko's powers playing a significant role in enhancing this depth.

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