Demon Slayer Fans Push Akaza as “¥50B Man” Trend
The new film Demon Slayer: Kimetsu no Yaiba – Infinity Castle Arc: Part 1 Akaza Returns has surpassed ¥12.87 billion in revenue with 9.1 million admissions in just 10 days since its July 18, 2025 debut. Alongside its record-breaking box office performance, a social media trend has emerged: fans are rallying around Akaza as the new “¥50B man,” following the “¥40B man” campaign for Rengoku during Mugen Train.

Akaza: Scene cut from Demon Slayer: Infinity Castle Arc Part 1: Akaza Sairai © Koyoharu Gotoge / SHUEISHA, Aniplex, ufotable
Infinity Castle Arc Breaks Box Office Records
According to data released on July 28, Infinity Castle Arc: Part 1 Akaza Returns grossed ¥10 billion within eight days of release, drawing 7.5 million viewers. This achievement makes it the fastest film in Japanese cinema history to cross the ¥10 billion mark, breaking the record previously held by Mugen Train, which reached the same figure in ten days.
The film also set a new opening weekend record, earning ¥5.52 billion over its first three days from 3.84 million admissions. Its opening day performance drew 1.15 million viewers and generated ¥1.64 billion, the highest first-day gross on record. As a result, the movie has surpassed Mugen Train’s initial momentum and is currently dominating the Japanese box office.

Shinobu Kocho: Scene cut from Demon Slayer: Infinity Castle Arc Part 1: Akaza Sairai © Koyoharu Gotoge / SHUEISHA, Aniplex, ufotable
From “¥40B Man” Rengoku to “¥50B Man” Akaza
During the 2020 release of Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train, fans launched the popular phrase “Make Rengoku the ¥40B man,” celebrating the character Kyojuro Rengoku’s role and encouraging support to push box office sales. That campaign coincided with the movie’s eventual achievement of ¥40.43 billion in total revenue, making it Japan’s highest-grossing film.
With Infinity Castle Arc, attention has shifted to Akaza, the Upper Rank demon who previously fought Rengoku in Mugen Train. As Akaza takes the spotlight in the new storyline, fans have begun using hashtags and slogans like “Akaza the ¥50B man” and “Let’s make Akaza reach ¥50 billion,” hoping the movie will surpass previous records.

Doma: Scene cut from Demon Slayer: Infinity Castle Arc Part 1: Akaza Sairai © Koyoharu Gotoge / SHUEISHA, Aniplex, ufotable
Fan Reactions on Social Media
Online platforms are filled with comments supporting the “¥50B man” trend for Akaza. Many posts highlight the character’s prominence in the new film, with fans expressing excitement through remarks such as “I want to see Akaza again—let’s make him the ¥50B man!” and “Akaza will become the 50-billion-yen demon.” These reactions mirror the enthusiasm seen during the Mugen Train era, where Rengoku became a cultural symbol due to fan-driven campaigns.
While Infinity Castle Arc has already achieved ¥12.87 billion in its first 10 days, it remains to be seen whether the film will continue its pace toward ¥50 billion. Regardless, the social media buzz demonstrates how fan communities contribute to box office momentum by creating viral trends around beloved characters.
Comparison with Mugen Train
Mugen Train set numerous milestones in 2020, including ¥10.75 billion in its first 10 days and an eventual total of ¥40.43 billion from 28.96 million admissions. In contrast, Infinity Castle Arc outperformed these early benchmarks, earning nearly ¥5.52 billion in its opening three days compared to Mugen Train’s ¥4.62 billion. Industry watchers are closely tracking whether this momentum can carry Infinity Castle Arc past Mugen Train’s long-standing record.
Teaser Trailer
Source : ORICON NEWS