I get the feeling people are coming to this and expecting more Monster Girls episodes and getting disappointed because this ova is not what they expected. That's fair, this is episodic and comedic but in a very different way than the main series. Where the main series focuses mostly on the group dealing with the collision of everyday situations and their extraordinary circumstances and personalities, this has nearly zero group content. This OVA, is almost entirely short snapshots of one girl dealing with her day to day stuff. Be it the problems of sharing the bathroom in a house with all those monsters. There'salso the great question "If you are a dullahan can you be a chunibyo ?"

The presentation is also a bit off. These would really be best to watch along with the series maybe interspersed in the episodes and you certainly have to see the series first.

Recommendation: If you have seen the main series it's well worth the watch.