 If you liked
Sekirei
|
 ...then you might like
IS: Infinite Stratos
|
These are almost similar. If you love to watch Ecchi / Harem / Romance / Comedy with a little bit mix of Mecha (Sometimes) These two are the great choices. I am a picky person when it comes to Anime so if I recommend an Anime probably 55%-65% Guaranteed That you would like it also.
AvJ
Don't Let me Go.