Summary: 5 stars – “Demon Slayer: Infinity Castle” is the perfect continuation of the renowned “Demon Slayer” series. Boasting top-tier animation and some of the most emotional subplots you will ever watch, it’s no wonder this movie broke box office records. Disclaimer: Since this movie is a continuation of the series, I recommend watching the TV series on Crunchyroll or Netflix before watching this movie. 

     I’ll admit it: I cried twice during this movie. This movie disproved Demon Slayer’s reputation as a show whose success “relies too heavily on animation.” Of course, the animation was top-tier. However, the characters’ backstories are what made the movie a success. 

     This movie had big shoes to fill. Just 5 years prior, the “Demon Slayer: Mugen Train” movie broke box office records in 2020 by becoming the highest-grossing anime film to date, with a total of $486 million, according to IMDb, despite its release during the COVID-19 pandemic. 

     Following its release after three and a half years of production, the Infinity Castle movie shattered expectations. Since its release in August 2025, the Infinity Castle movie has grossed $648 million worldwide, according to IMDb. Considering that its budget was $20 million, the movie is a huge success. The Infinity Castle movie is already the highest-grossing anime film of all time while ranking #5 in the 2025 worldwide box office.

     Demon Slayer’s main plot is fairly simple and typical of an anime story. Tanjiro, a young boy, lives a happy life until a demon kills his family and turns his sister into a demon. Tanjiro then swears to avenge his family by killing Muzan, the ruler of the demons. 

     This movie is the first of a trilogy that will cover the Infinity Castle Arc of Demon Slayer, in which Tanjiro makes his final push to defeat Muzan. The beginning and majority of Tanjiro’s journey is a TV series, which you can watch on Crunchyroll or Netflix. 

     As previously stated, Demon Slayer is defined by its animation; it has a reputation as one of the most well-animated anime of all time. So, to no one’s surprise, the animation in the Infinity Castle movie was top-notch. Comparing the scenes from the Demon Slayer: Mugen Train movie and the Infinity Castle movie, the latter’s frames are noticeably more detailed and vibrant. 

     Also, the backdrop was gorgeous. The setting, which is the actual “infinity castle” within the Demon Slayer universe, is such a unique concept that was perfectly executed down to the detail by the animation studio, Ufotable. As someone who watched the movie three times, there are so many small details in the fight scenes that you can catch upon rewatching the movie. For example, one character names his attacks after different types of Japanese fireworks that his attacks somewhat resemble. 

     The movie’s little subplots add a layer of depth to the fight scenes that makes it much more than just good versus evil. Previously in the series, Demon Slayer’s backstories had the audience grinning at the wholesome past of a good-hearted character or clenching their teeth at the cruelty of one of the villains. However, the Infinity Castle movie breaks away from that pattern and surprises the audience by using character backstories to flip the audience’s perception of a character. This twist makes this movie so much more emotional and truly unforgettable. 

     Demon Slayer: Infinity Castle’s animation and backstories make it more than your typical fight-filled anime. Watching this movie will have you dreading the fact that the next part of the trilogy likely won’t be released until 2027. Don’t miss out! Rush to theaters before it leaves. Otherwise, you will have to wait until it starts streaming on Crunchyroll sometime in 2026.