With 2021 finished, the year-end box office numbers of South Korea have finally been released, revealing that Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train was the 7th most-watched film in 2021, and the 8th highest-grossing film overall.
Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train is the second-highest-grossing anime film in South Korea behind Your Name, which made US$24,570,977 on the back of 3,637,599 tickets sold.
Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train opened in Japanese cinemas on October 16, 2020, and had the best opening weekend in Japanese cinema history, becoming the highest-grossing film in Japanese theaters ever, the highest-grossing anime and Japanese film worldwide, and the highest-grossing film of 2020.