The comedy types in this show are a combination of nonsense, harem, violence, and embarrassment comedy.
-Nonsense meaning they say weird things which make no sense at all
-harem comedy is obviously accidental groping of breasts followed by a kyaa and a swift dismembering
-violence comedy has a lot to do with the main character being a zombie, since the protagonist can't die they don't hold back on anything
-embarrassment comedy being that the main character gets humiliated in front of his classmates a lot in rather extreme fashions.
The story is alright as I haven't seen them stop introducing core plot throughout the 2 seasons I've seen so far. It seems like they are really tempted to go the route of ranma 1/2 though and just throw random episodes out there which they have done and seem like they are doing more often. New harem members seem to be steadily entering the series at about the same rate they do in Sekirei.
The arts mediocre, usually very little is animated in every scene. Its typical shounen art with high quality images, but the animation is fairly weak. They also take full advantage of the girls to give them super cute scenes which are elaborated on from the manga using really cute art and sound. Nothing breakthrough about the sound either. Pretty standard opening and ending music.
Of course the usual redeeming feature about an ecchi harem story is the characters. This anime truly does paint a wide array of interesting characters from various walks of life with absolutely bizarre backgrounds and personalities. Truly this animes most redeeming feature.
Overall its one of the best ecchi harem animes out there. I would watch this 15 times over before I even bothered looking at To Love Ru or Rosario Vampire.....
