Just to start, I am a huge fan of this series, and I loved the OVAs, but this volume just felt lacking to me. The first episode was incredible, as it should have been, after where they left us last volume.
The Second episode is your typical recap episode, and although you think they are going to give you some background, they don't give you any of the major plot events, and it just seems empty.
The Third and Fourth episodes on this DVD are what really put me off. If you watched the OVA, and you like the OVA, then prepare yourself. Yomiko is back, or at least her character is, but the Yomiko we all know and love, is apparently dead. The voice actor for her doesn't even try to capture her original voice, and it came off sounding sub par. She is just not the same person you remember from the OVA, it's like they were afraid to make her cool, because they didn't want to take away from the paper sisters. I am a big fan of bringing back characters that people like, but if you do, I implore that you do it right.
All in all, I thought that the first episode was the only one that was worth the purchase. If you like the series so far, you need this volume to be able to complete it. Just be warned, You may not like this one as much as the past 3.