The prefix S1E01 follows the television industry standard for season and episode numbering. This indicates that the file contains the very first episode of the anime adaptation of Tatsuki Fujimoto’s manga, Chainsaw Man .

The definitive start. Episode 1, "Dog and Chainsaw." It’s the introduction to Denji, a boy living in extreme poverty, and his literal "heart," the chainsaw devil Pochita. Chainsaw Man:

Episode 1, titled "Dog & Chainsaw," introduces Denji—a destitute teenager who merges with his pet devil, Pochita, to become the titular Chainsaw Man. The episode ends with Denji joining a government devil-hunting agency. It is one of the most anticipated anime premieres of the 2020s.