For hardcore fans only.

The TV series was already a step up from the original manga, in a way that filters some audience who might not be familiar with all the parody references. The OVA is even more selective of the audience than the TV series, adding MMORPG and some other bits to the mix. You would definitely get a good laugh out of it if you know most of the references. If not, it's still fun to watch at least once, especially Kagami's segment ^_^;

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