Edens_zero_21_pro_acb.mkv -

Likely a shorthand for the release group's name or a specific audio/video codec configuration used for that file.

A man named Paul, revealed as the disciple of the missing "Shining Star" Valkyrie, uses his Ether Gear to remove the crew's collars and hands Homura a B-Cube containing the truth about Valkyrie's fate. Understanding the Filename

The terms in your filename typically provide technical context used by fansubbing or encoding groups: Refers to the episode number. Edens_Zero_21_Pro_ACB.mkv

A common multimedia container format (Matroska) that supports multiple audio tracks and subtitle streams.

Shiki and Homura are forced into a fight with a massive ore creature called Black Rock. Rebecca and the rest of the crew arrive to assist, using concentrated firepower and Shiki's gravity powers to defeat it. Likely a shorthand for the release group's name

Despite defeating the creature to bring their "prisoner counters" to zero, Madame Kurenai reveals the counters were a lie and resets them to 100,000, intending to keep them enslaved.

Often indicates a "Professional" or "Premium" encode, sometimes associated with specific release groups that prioritize high-bitrate video. Despite defeating the creature to bring their "prisoner

The filename likely refers to a high-quality video file of Episode 21 of the anime Edens Zero . In this episode, titled "Reset," the crew faces a betrayal in the Labor District of the planet Sun Jewel. Episode 21 Summary: "Reset"