Demon Slayer is an exceptional anime series that has gained a significant following in recent times. Apart from its captivating fights and animations, the series' logo is said to hold significant foreshadowing, as pointed out by @SaaraAdam21, a user who shared their observation in a thread.
If this theory proves to be accurate, it implies that the creator, Managaka Koyoharu Gotouge, may have had the series' ending planned right from the beginning. This article delves into the significance of the circular Demon Slayer logo and how it plays a crucial role in the overall storyline.
Disclaimer: This article contains spoilers from the Demon Slayer manga.
Demon Slayer's logo foreshadows Sun Breathing's 13th form
The anime showcases Yoriichi, depicted in this image via Ufotable. In a thread by @SaaraAdam21, it is revealed that the circular logo of Demon Slayer serves as a foreshadowing of the entire story, particularly emphasizing the significant historical encounter between Yoriichi and Muzan.
Close to the conclusion of the series, Kamado Tanjiro experienced another vision of Yoriichi Tsugikuni following his brutal attack by the Demon King Muzan Kibutsuji. In his near-death state, Tanjiro had the opportunity to listen to the firsthand account of the original Sun Breathing user, who shared details about his intense clash with Muzan Kibutsuji and his intricate ties with the Demon Slayer Corps.
Kamado Tanjiro as depicted in the anime (Image via Ufotable)
In the vision, Tanjiro witnessed Yoriichi utilizing his Sun Breathing forms in direct combat with Muzan. Upon observing the Thirteenth Sun Breathing form, Tanjiro recognized its potential in defeating the Demon King.
The Thirteenth form entailed the user executing all 12 Sun Breathing forms in a seamless sequence, commencing and concluding with Enbu. By employing this Sun Breathing form, the user could enhance their precision and dexterity while mitigating exhaustion.
Displayed above is Kamado Tanjiro, as depicted in the anime (Image via Ufotable).
Remarkably, this technique involved synchronized movements, resembling a graceful dance, which culminated in a circular onslaught aimed at obliterating all twelve of Muzan's critical organs. These organs, comprising seven hearts and five brains, roam freely within his body. Astoundingly, this relentless assault was specially devised with the sole objective of nullifying Muzan Kibutsuji, as no other conceivable method existed to simultaneously eradicate all his vital organs.
As per @SaaraAdam21's theory, the circular symbol featured in the Demon Slayer logo can be interpreted as a hint towards the Thirteen Sun Breathing Form. This advanced technique involved wielding the sword in a circular motion. Additionally, the circle represents Tanjiro Kamado's ability to inherit the ideas and beliefs of his ancestor, enabling him to triumph over Muzan.
Muzan Kibutsuji as seen in the anime (Image via Ufotable)
In a unique manner, Yoriichi Tsugikuni, the original practitioner of Sun Breathing, achieved victory over Muzan, even though he had perished almost half a millennium ago within the storyline. Without the memories passed down to Tanjiro, the main character would have been unable to vanquish the Demon King, regardless of his intense training efforts. The creation of the logo at the anime's onset, which subtly alludes to the conclusion, serves as evidence of the meticulous planning by mangaka Koyoharu Gotouge.