Kemeko Deluxe!

They both have a strange, space girl and similar situations and characters, if you liked one, you'll like the other for sure. 

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. 

Similarities: 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. Dissimilarities: 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 have Sci-Fi girl who appears in boys live. Both have childhood friend involved. Both really funny. If u liked Kemeko DX u should definitely watch Sora No Otoshimono.  

the two are ecchi anime that are both unfunny comedies about a normal guy who has a cute pink haired girl in love with him, not to mention the guy also gets mistreated by about every girl he comes in contact with 

- 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  

Sudden Girlfriend appearance anime who is weird in more ways than one. Kemeko is more comedy than romance though, and is lacking in the alien department.  

the series are so short, have the same number of episodes, both are very good comedies 

girl from space thows a young mans life in to chaos only he knows the truth about her and hes forced in to a battle he never wanted with no real ability to protect himself or those he loves  

If you like the bawdy fun and sexy girls in Kemeko you'll like Kanokon too. 

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. 

Both are insane, hysterical, perverted, and surprisingly well animated stories of a boy whose life gets turned upside down by supernatural girls. Great for anyone looking for some crazy comedy 

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!