Be sure to watch this OVA so you can keep up with the story of To Love-Ru!
Story: Not too much to say here, it's just six episodes - some of these episodes have no real plot to them. Others do though and appear to be important to the story of To Love-Ru. It was pretty enjoyable.
Art: I think in this OVA there's actually a slight improvement in the artwork. I could be wrong though, but if you read this review and agree with me, let me know.
Sound: No real difference in the sound, it's just fine.
Characters: Even more characters have been added to the series, and already existing ones have gotten a bit more interesting too.
Overall Enjoyment: For all the things To Love-Ru lacks, it still makes me laugh more than any other series has in a long time. So, it's pretty high on the scale of enjoyability.
And so, next is Motto To Love-Ru!