He had watched the “Demon Slayer” movie a few days earlier. “I wanted to see the Mugen Train running,” Watanabe said. In the film, the protagonists board a Mugen Train to kill a demon.

After Demon Slayer: Kimetsu no Yaiba the Movie: Mugen Train (also called Infinity Train) first premiered in 2020, it topped Japan’s box office, becoming the highest grossing film of all time ...