LOS ANGELES The latest entry in Crunchyroll's " Demon Slayer " anime film series took first place in the North American box office this weekend with a genre-record $70 million debut, industry estimates showed Sunday. "Demon Slayer: Kimetsu No Yaiba -- Infinity Castle: Part 1," the first title in a new trilogy based on the popular manga series, opened to the top spot on US and Canadian screens after already becoming Japan's third-highest grossing film of all time. The film, which continues the