These are not so much OVA's as the end of the main series. OVA 1 should have literally been the last episode of the main series. While episode 12 of the main should have been OVA 1. AKA the correct order to watch these is Series episodes 1-11, OVA 1, (OVA 2, EP 12). OVA 2, and episode 12 could be slipped into the middle of the series without much trouble, though OVA 2 does seem to work better as a postscript. Even with the OVA's and watching in the correct order it's a series with a non ending. Nota cliffhanger just a non ending. You are pretty much stopped in the middle with most of the questions unresolved.

The story goes no place. The characters are at best weak. Natsura may well be the most clueless man in the history of Anime. We are talking about a guy who needs a minder to cross a street. The girls are mostly described as at best flat. This really weakens the comedy.

Verdict: It's a meh.