 If you liked
Injuu Gakuen La Blue Girl
|
 ...then you might like
Makai Tenshi Djibril
|
In many ways, these anime are like night and day, but they also have much in common. Your main hero is a female with superpowers (Miko = demons, Rika = angels), and she fights lots of tentacle monsters. Neither are exactly modern masterpieces of anime, but if you're looking for an ecchi anime to add to your collection, and you liked either of these, you will very likely enjoy the other.