Kore wa Zombie desu ka? of the Dead

Ecchi, magic, comedy, harem, and comedy exist in both of these series. And of course being a harem, both of these series has one of those lucky guys who just seems to get the attention of almost all the ladies.  

Both have a inhuman as the main protagonist. and both tells about the daily lives of the main protagonist,despite of them being inhuman 

Both are comedies, with good fight scenes, with a story that at first seems to be serious, but it changes its course towards something comical and very entertaining. (Harem, Ecchi) 

Both anime have a leading male character who has a female character always by their side to revive them. There are also lots of funny scenes in both anime.  

Both involve main characters who are unable to die, but often randomly get maimed to the point where they would die, for no other reason than random comedy. Angel Beats!is a little more story and a little less humor (not by much) than Kore wa Zombie though. Both of the aforementioned main characters are also 'brought back to life' in a sense as well, with some sort of back story as to how they died. 

A lot of the fanservice takes place in the main character's overactive imagination. 

Well, they both have a male who lives with "supernatrual" girls, haremish. I just think they are both rly good animes so if you have seen one of them i think you will enjoy the other one. The difference between them is that in Sora no Otishimono the male is a bit more perverted ^^, He gets beat up for being so though. 

Very similar charachters. Both rely heavily on supernatural themes. Both involve a fair few action scenes however; 'Kore wa' is a bit more charachter driven.  

They both are comedy, harem. And they have kind of the same comedy, so if you liked Omamori Himari then you will like Kore wa Zombie Desu ka? of the Dead much more :) 

- 1 Guy. - Girls with superpowers. - Monters. - A lot of Comedy. 

Both are hilarious and random shows with some ecchi. Just don't expect any complex plots from these and you will surely enjoy the experience (unless ecchi is not your thing).