The scores for this are all over the place. Character development is...Well nearly non existant along with the story...Yet it still gets an 8?
Thats simple. This anime doesn't exist to be serious. Doesn't exist to develop some amazing characters and in no way exists to have a deep and meaningful story. No this anime exists for one simple reason. To screw around and have a good time.
The action and amount of fan service in this is boarderline stupid...well not borderline it is stupid...But unlike other anime who are like this HOTD never tries to hide the fact that this is exactly what its trying to do. This is even more present in the english dub with some of the downright aweful one liners and stuff they come out with. This anime gets a high score because it never tries to hide what it is.
Its an anime for guys who just wanna sit back have a laugh and look at anime girls bodies that are over the top drawn (even if your like me and that kinda stuffs not really your thing its still kinda funny how many panty shots they can get into such a small space of time...You can make some dangerous drinking games using this show and panty shots)
If you do what HOTD does and not take it seriously you will likely find yourself enjoying it in spite of your self...Throw it on if your looking for cheap stupid laughs and you're gonna enjoy it....Looking for soemthing serious...Stay away