Lets be fair here. There's no point of someone who hates fan service or the Series to bother watching this becuase they'll just hate it. But it's not bad.
I'm not going to go into details about the story, since there's not much but I'll go over the main good and bads and you can watch it and judge yourself, though I do recommend watching the game and main series.
Roles for the 10 secondary characters, some of whom are better than the primary ones.
The graphic are still very good.
Pretty good to watch when you're bored.
Funny at times
No real story to it (though since its and OVA
you would expect much)
MAIN BAD: Breasts. Now I like the show along with the fanservice because although the fanservice was there in a big way, I wouldn't watch an episode with the only though of it from the bouncing or flashes. But the non-censorship was unnecessary, nobody asked for it, it brings unneeded fans to the show and puts a scar on it already hurt name.
If it wasn't for the 10 extra characters then this would've been a 4-5.