Demon Slayer Infinity Castle movie's first trailer highlights Tanjiro's next battle

Akaza and Tanjiro as seen in the Demon Slayer Infinity Castle movie
Akaza and Tanjiro as seen in the Demon Slayer Infinity Castle movie (Image credit: Studio Ufotable)

The Demon Slayer Infinity Castle movie, scheduled for release on July 18, 2025, is one of the most anticipated anime events of the year. Divided into a trilogy, the upcoming films will raise the stakes as all the Hashira confront Muzan's Upper Rank Demons for the sake of protecting the world.

The Demon Slayer Infinity Castle movie's first main trailer officially came out on June 28, 2025, and teased the main matchups that fans could expect. In particular, Tanjiro's long-overdue fight against Akaza is highlighted, which is considered by most manga readers to be the best battle in the series.

The last season of Demon Slayer had ended on a cliffhanger, with Kagaya Ubayashiki having sacrificed himself in order to corner Muzan. As the entire main cast rushed to kill the antagonist, the Demon King deviously summoned his Infinity Castle and dragged them into his domain.

Akaza, as seen in the Demon Slayer Infinity Castle movie (Image credit: Studio Ufotable)
Akaza, as seen in the Demon Slayer Infinity Castle movie (Image credit: Studio Ufotable)

Prepared to lay down their lives for the sake of revenge and getting rid of the evil demons, the Hashira and Tanjiro's team resolve to end the demons’ long history of bloodshed and tragedy. The Demon Slayer Infinity Castle movie will pick up from this point, showcasing exhilarating battles between the heroes and the villains, where the matchups are made based on pre-existing rivalries.

Widely considered to be the best arc in the manga, it features thrilling confrontations, memorable development, and plenty of heartbreaking moments. The trailer hints at what is to come, depicting Shinobu's fight with Doma and Zenitsu's shocking change while facing Kaigaku.

Among the various fights that take place, Tanjiro vs Akaza, which is the highlight of the trailer, is expected by many to be the most intense and emotionally charged battle in the movie.


Why Tanjiro's fight in the Demon Slayer Infinity Castle movie will take the series to the next level

Tanjiro has faced countless struggles in his time as a Demon Slayer, having experienced both victories and losses. His next battle, which will be against Akaza, will be his greatest trial yet. Soon after entering the Infinity Castle, both the protagonist and Giyu Tomioka will be faced against Akaza, the Upper Rank 3 Demon.

Despite their combined efforts using Sun Breathing and Water Breathing, however, they will be outmatched by the demon's destructive martial arts and enhanced senses. This will force both characters to evolve and reach a new level of power to face the demon. With exciting scenes showcasing the Demon Slayer Mark and techniques like Transparent World, there will be no shortage of hype moments.

When paired with the heated relationship between Akaza and Tanjiro, rooted in Rengoku's death, viewers can expect intensity unlike anything seen before. Finally, fans may come to see the detestable demon Akaza in a new light after the movie.

His heart-wrenching flashback as a human, along with the tragic deaths of his loved ones and transformation into a demon, will make for an immensely impactful scene, leading up to an explosive and thought-provoking finale.

Edited by Sohini Biswas