It's got the obvious elements, such as "boy meets alien girl", but it also has other similarities such as the wacky robot designs, the boy has a strange power in his head, and it's fast and crazy pacing, as well as having some hilarious moments. There are some obvious parallels between the two.
These two anime are really alike. They have identical type of humour And also characters are similar: Kemeko reminds me of Guu and Sanpeita is like Hare. In both anime there is a bit of fanservice. If you liked one you will definitely like another.
Both have the same situation where the guy and girl met once when they where children and after sometime they where able meet again.
Both have the same school settings.
Both have the same sci-fi, romance, harem and action genre.
Both have similar situation where girl is running away from an evil organization.
And, both have the same predicament where guy got involved.
One has an extra comedy genre, while the other one has a mystery genre.
The girl in one anime is an ET, while the girl in the other anime is a gov't science project that got away.
- both series have a girl that declares herself as the main characters wife/future wife
-both main girls just wedge themselves into the mains life
- both main girls have a very (interesting) personality
-both have sci-fi/fantasy aspects (sorta?)
-both have a cute art style
just the fact that they overpowered the random parodies and people can't stop laughing at them. Also because of the whole force marriage thing. All in all, 2 awesome animes i'd like to compare to one another!
They are quite Similar, it has Comedy,Romance and Action.
Also it has that Inner self and Outer Self thingy. for example Moka (Rosario Vampire) has two personalities and M.M (Kemeko DX) aswell.
Well the difference is that M.M has a Nice, Cute, Kind inner self while Moka has Mean,scary and strong inner self... So its like the Opposite.
overall they are good anime.. and worth watching.
Ohhh Don't Forget there is also Ecchi in both Animes But Rosario Vampire has Tons of Ecchi than Kemeko.