Japan enjoyed its biggest box office hit in 2025 with the release of Ufotable's Demon Slayer: Infinity Castle Part 1 - Akaza's Return. Demon Slayer has since become a massive icon with an undying legacy. Demon Slayer's massive success has also become the catalyst behind a major shift in the anime industry that sees more studios pivot to canon anime movies following up TV seasons.
In 2027, we're officially going to see Demon Slayer: Infinity Castle’s biggest successor, and that's Toei Animation's One Piece Film: God Valley. This new One Piece movie is about to succeed Demon Slayer's theatrical success and compete at the box office with its second installment, tentatively titled “Infinity Castle Part 2.” We’re all looking forward to seeing what’s in store for these juggernauts next year, as the expectations are sky high.
Demon Slayer has proved itself as a one-of-a-kind franchise. The story behind Demon Slayer itself is simple, but this simplicity is its biggest strength, as it has allowed it to reach global audiences and casual viewers with great ease. Demon Slayer burst onto the scene in 2019 when its first anime season by famous Japanese Studio Ufotable premiered. Its popularity grew dramatically in 2020 when its first movie, Mugen Train, was released. It went on to become the biggest Japanese movie of all time, surpassing previous iconic hits such as Spirited Away.
In 2025, Demon Slayer completely changed the anime industry for good. On July 18, 2025, Demon Slayer: Infinity Castle Part 1 was officially released in Japan, and in the following month, it was launched globally. While we all expected it to be big, nobody imagined it would go on to become the highest-grossing Japanese movie of all time. In the domestic market, it performed at around the same level as Mugen Train, but internationally it shattered all records and went on to gross over $700 million at the global box office. This is unheard of and has caused a drastic change in the industry. With Demon Slayer's success, many anime franchises are pivoting to adapting new arcs in movie format instead of TV Anime seasons, and among them is the one movie that could succeed Infinity Castle in 2027 — One Piece Film: God Valley.
On One Piece Day, which took place on August 22 and August 23, 2026, the One Piece franchise made massive reveals that shook the entire fanbase. While the beginning of the event was rather uneventful, it left off with a bang as we got the official confirmation of what is easily one of the biggest projects from Toei Animation in recent years. On August 23, 2026, Toei Animation announced two major theatrical movie releases for the One Piece franchise, far different than anything we've seen before. The new movies announced are:
Out of these two, the one that has stolen the spotlight is One Piece Film: God Valley. This new One Piece movie officially covers a canon segment of the manga, which also happens to be the biggest war unveiled by Eiichiro Oda in his story. For context, God Valley will be One Piece's first canon movie, and it is easy to see that Toei is now following the same blueprint laid out by Studio Ufotable and Demon Slayer.
In any case, with a new One Piece movie announced, fans are already calling it the successor to Demon Slayer: Infinity Castle. It is. A surprise to know that One Piece is a tremendously popular story all over the world. With its growing success, fans are anticipating One Piece Film: God Valley to be a smashing box office hit. One Piece's previous movie, titled One Piece Film: Red, which was released in 2022, is still among the top ten highest-grossing Japanese movies of all time globally, sitting at number 8 at the moment, having accumulated about 250 million at the global box office. For reference, Film Red was not a canon movie, but still managed massive numbers.
In contrast, God Valley has been one of the most requested movies by the One Piece fandom, covering one of the most exciting stretches of the final saga of One Piece, where we finally meet legendary pirate Rocks and explore the Roger Pirates in more depth. This movie will depict the God Valley Incident, which has long been hyped up by various characters across the story, starting from One Piece Chapter 957.
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