It was enjoyable. Especially the MMO part, which was refreshing but maybe somewhat hard to follow at first but I didn't really laugh until at the end of the next arc.
Spoiler for Kagami:
It was just plain hilarious when Kagami suddenly woke up after dreaming about that figter's ball(?!?) and sayed... what ever I imagined her to say and then the reaction of Tsukasa.
She sounded like Apacahi from Kenichi for a while.
I had kind of hoped that this OVA would have continued the "story" somehow, but oh well, it worked like this too.