Yeah! Hello to "High School of the Dead"!
I try to sum it up:
Ecchi, Zombies, Ecchi, Action, Romance, Ecchi, Seinen due to Ecchi, Comedy and.... Ecchi + Nose bleeds! Dawn of the dead meets "Hentai"
Yes that's fairly it!
Unfortunately I have to write more!
There are background stories for every character; some are good some are stupid.
There is some romance and a lot of zombie slashing.
The red line is: Survival! and of course some teenage problems, parental issues, love triangle, P/C.T.Z.D (post/current traumatic zombie disorder), slashing, gore, violence, martial arts... just to give you some hints! It`s no disadvantage that our main protagonists do not act that fu**ing stupid than in other zombie movies/series!
You like: animated chicks, zombies, action, comedy, group dynamic, action and mind relaxation? Check it out!
You like: Deep thoughts, politics, questions about the sense of life, religion, conspiracies? Go watch some documentary!