Fansubs make it possible for a global audience to enjoy content that hasn't been officially released in their region yet or may never be officially released.
Episode 1 refers to a specific release of the first OVA in this adult anime series, likely from early 2011 when the series debuted. Fansubs make it possible for a global audience
: Olga's loyal bodyguard and a central focus of the first episode. The episode introduces the Seven Shield Alliance encoded in MPEG-4 (mp4)
: Indicates that this is the first episode (01) of the series in a format that is ready for viewing, encoded in MPEG-4 (mp4), a common video file format. a common video file format.