There are cats in both anime.
Mayoi does not have any supernatural elements, but it keeps it quite interesting with a cute cat girl with a Shiina Mashiro, Inori Yuzuriha character build with probably the same VA as well (￣▽￣)
(Warning: Main character is annoyingly indecisive in both anime's. Raging is ensued)
Both have a dealing with cats
Both Mashiro and Nozomi have similar personality
and start liking the male protagonist
ALSO other females like the male protagonist as well
Both groups act as a family as well
Both of these shows themes are cat based or in relation to cats in some form or another. These animes have the same characteristics with a heavily fanservice ladened story line. There is no plot at all rather the objective is a mere precursor to douse the anime with more fanservice.
if youre looking for another cat-eared girl character well here it is.. Mayoi neko overrun and omamori himari has the same cat-eared girl character but the opposite personality.. the only sole purpose for this recommendation is because of "Cat Ear Obsession"..
- From the start of the 1st episode both male characters saw panties of the female character.
-Both had 2 specific female characters who are at each others throat.
-Both animies have male support characters whom does not show any interest with anyone of the lead male character's harem.
-Both lead male characters have a female character who is either direct or too clingy.
-Also, both animies have female characters who have feeling for the male character, but,prefers stay on the sidelines.
- One has 4th extra female character in the harem.
- In one anime, the male character knows who he really likes, but is also concern about what others feel. The other one, the male character remains oblivious as to how his harem feels for him.
- Lastly, in the other anime one of the female character always kicks the butt of the male character, while the other has a female character who's been in an on and off relationship with the male character.  read more
While I am not overly found of either of these series, I can't deny that they have a simular feel to each other and that one may very well appeal to someone who likes the other. Basically, they have very simplistic slice-of-life harem senarios where all the girls are gag over the guy.
Both shows are about a rather plain boy who is surrounded by a strange girl who just shows up in his life, his childhood friend who has a crush on him, and a very close but strange group of friends in which they make up a club at school. Both anime are ridiculously funny, very random, and deal with many elements of otakuism.
Both titles become random comedy for the middle portion of the series, while having generally uninteresting "story" portions at the beginning and end. The random comedy is what makes both shows worth watching.
The art is very similar.
Both has dishonest characters. eg.''i wasn't waiting for you, something happened thats all.''
It has the same feeling like a bit 'RANDOM'
Both have 12 eps
Both are harem,comedy and generic animes.
Most importantly, they are both enjoyable