Interesting anime - harmless title (and misleading if it makes you expect some kind of romance series) and starts with an extremely standard&lightweight mood&setting but it progressively becomes quite the opposite (especially its 3rd quarter). I personally think that it's generally underappreciated, but it probably depends a lot on the individual taste.

I liked it and I still watch it from time to time.

Animation & sound are good/ok (nothing mind-blowing).