The first half is slow, but the last half makes up for it. Throughout the season there are heart felt moments that make the whole series feel genuine, ane make its short comings easy to overlook. Its a moe anime first and a horror anime second. Its hard to call it horror as it isn't really scary visually or mentally, but slice of lifers will enjoy this. Season 1 covers 3 English volumes of the manga, so you can pick up the story from there as its looking unlikely to get more seasons.