This review is based off of assuming that people watched the prequel of Oni Chichi. It will make a lot more sense if you had watched them (Just the original, don't need to watch Rebirth)
(Minor spoilers below)
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Okay, now to the OVAs.
Story: Here's a note for some people: the father and daughters are NOT blood-related, so quit whining about it. We're watching a hentai, what do you expect? Anyway, there is not a huge plot going on but there are some good twists. Enjoyed it a lot more than the prequel, especially Rebirth. 8/10
Art: Poro never failed me with their art. Characters are drawn to good detail and nothing painful to the eyes. 10/10
Sound: Wasn't paying too much attention to this aspect. First thing that came to my mind was the moaning (Yeah I'm perverted like that), which I can give a good score to. Nothing painful to the ears. 9/10
Character: I really like how the characters developed from the prequels, especially the father. They aren't mindless like other hentai characters. 9/10
Enjoyment: Reborn really changed my views on Oni Chichi franchise. As long as you take out the incest(?) portion you get yourself a really decent OVA with a nice flow. 9/10
Overall: I think this will hit the spot (If you know what I mean) for most hentai viewers. Must watch if you're in for some good shows. I find myself rewatching this everytime I want some good faps and laughs. 9/10