I thurly enjoy every OST that appear in this anyme, yet as the episodes pass Kirini became more annoying at times that even I wanted to slap her at least once to make her react - and I´m a very pacifist person - but if anything save the story for me it would be the secondary characters and ocational subplots.
I start to watch this anime like 2 or 3 years ago but I never finished for many things - school, got bored, lost the the webside where I see ir, etc. - but I decided to give it another chance...not so sure it was my brightest idea...but now I can aenjoy the fact that at some point in my past I bought a Kuroneko figure that to this day is adoring my manga section in my room.