If you liked
Ginga Nagareboshi Gin
|
...then you might like
Shingeki no Kyojin
|
Both of the main characters and their companions are fighting against insurmountable foes for the sake of survival and vengeance.
If you liked
Ichiban Ushiro no Daimaou
|
...then you might like
Ao no Exorcist
|
The main character is the incarnation of the greatest evil; however he only wants to be a good guy. Both stories have funny and serious moments (less in Daimaou). As far as I know, there will be an academy atmosphere which is also common in them.
If you liked
Ginga Nagareboshi Gin
|
...then you might like
Genshi Shounen Ryuu
|
Both series is a bit old (20-40 years), with similar art. Each show has a young hero with a half-eyed and nearly unbeatable enemy, and has lost a parent, while he was young. The story is realistic, but just for a time being.
If you liked
Romeo x Juliet
|
...then you might like
Ga-Rei: Zero
|
In both series the protagonists have a deep bond with each other, there are no humorous or funny scenes, the art is alike and both of them are telling the struggle against the inevitable fate (cast by family quarrel). [Unlike RxJ, it has some gore like Blood+].
If you liked
Strawberry Panic
|
...then you might like
Romeo x Juliet
|
Even if they are different in gernes, they are very emotional, the story has tragedy in it and there is "love at first sight". I made this recommendation to show, that not just a shoujo-ai anime can be recommendation for another.