I watched the series when it was simulcast on Daisuki, but they didn't upload the OVA, it wouldn't be years later after a rewatch that I would see this on Funimation. Story: 3, like the TV series, there are some ideas I like from this despite the rest of it being very generic but these unique or new ideas were so shoddily executed because of the limited number of episodes the staff were allowed. The poor pacing means some intriguing technologies introduced in this OVA sadly end up feeling like deus ex machina. If only they took the time to reveal them over the course ofmultiple episodes, so such things are developed in-story in a more realistic time frame. For example, Evgeni has a jamming signal that prevents coupling, so Elvira and Mayu come up with a way for Aoba to self-couple; by creating a fake persona in the Luxon NEXT. This is genius, and coming up with just the idea so quickly is no problem, but they program way too quickly to be believable.
Art: 5, same as the TV series
Sound: 5, same as the TV series
Character: 5, same as the TV series
Enjoyment: 6, The OVA does tie up some loose ends and should be watched immediately after the series. It concluded the TV series like it was supposed to but it did it to fast.
Overall: 4.8, rounds up to 5