CONTENTS
Demon Slayer Continues Its Record-Breaking Streak in Japan
The latest film in the Demon Slayer anime franchise, “Demon Slayer: Kimetsu no Yaiba – The Movie: Infinity Castle” or “Mugen Castle Arc Chapter 1: Akaza’s Return,” has made an explosive box office debut in Japan. In just 10 days since its release, the film has attracted over 9 million movie-goers, and earned a staggering 12.87 billion yen (over 85 million USD) at the box office. With overwhelmingly positive reviews, word of mouth has seriously boosted the success of the already massively popular anime series, based on the globally acclaimed manga Demon Slayer: Kimetsu no Yaiba by Koyoharu Gotouge (which has sold over 150 million copies across 23 volumes).
The “Infinity Castle Arc” or “Mugen Castle Arc” follows Tanjiro Kamado in the final stages of his journey to defeat the demon Muzan Kibutsuji, a desperate attempt to avenge his family and cure his demon sister Nezuko. The film joins Tanjiro and the rest of the Demon Slayer Corps as they enter Muzan’s own lair, the Infinity Castle, and fight to discover the hiding demon and destroy him for good. Of course, despite the impressive run length of over two and a half hours, the Demon Slayer film released on July 18th, 2025 is far from reaching any major conclusions – instead, “Akaza’s Return” has been announced as the first installment of a trilogy.
The Fastest Film in Japanese History to Reach 10 Billion Yen, Surpassing Mugen Train



Within its first three days, the first Demon Slayer Infinity Castle movie saw one of the most impressive viewer responses in Japanese box office history, with movie tickets selling out all over the country. Over a week in, the film’s momentum is only continuing to surge. By day 8, it had already crossed the 10 billion yen mark, drawing in 7.5 million viewers and earning 10.5 billion yen. This achievement makes it the fastest film in Japanese history to surpass 10 billion yen in box office sales, beating the previous record… set by the very same franchise.

In the midst of the COVID pandemic, the Demon Slayer: Mugen Train film is believed to have played a significant role in drawing the Japanese public back into movie theaters despite the prevalence of “stay home” culture, and the result was a film that earned 10 billion yen in just 10 days, even in October 2020.

The first film in the Demon Slayer: Kimetsu no Yaiba Infinity Castle Arc is now on pace to become one of the highest-grossing anime films ever in Japan, further cementing Demon Slayer’s position as a cultural and box office juggernaut. With more dramatic storytelling and even a grand finale still to come, we can only wait and see what records the final Demon Slayer films will break!
Sources
Infinity Castle Images: Official Movie Website
Mugen Train Image: Yahoo News
Information: Yahoo News
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