[老番]Megazone 23 / メガゾーン23 OVAs I, II, III [OnDeed] 1080p BDrip (HEVC) 无限地带23 1-3OVA[bt磁力种子](2)

As for the extra video that is included… It is the footage the producer of Robotech ordered for their hack-job adaptation of Megazone 23, the justly-floppedRobotech: The Movie. It is actually a completely redone happy end for Megazone 23 Part I. Naturally it contradicts events of Part II and makes no sense, since it was made for a completely different story, but it is an interesting extra to see.
This version of it was included on the english-language “International Edition” release of Megazone 23 Part II, which is the reason why it starts with english introduction for the whole series but lacks the original Robotech audio. Basically everything about it makes very little sense so don’t be confused. I would suggest watching it only after you see Megazone 23 Part II.