If you liked
Fullmetal Alchemist
|
...then you might like
Darker than Black: Kuro no Keiyakusha
|
Like the law of Equivalent Exchange (The rule that alchemists in the series consider to be the foundation of Alchemy, or even the fundamental law of the world: to obtain, something of equal value must be lost.) in Full Metal Alchemist; Darker than BLACK has a similar form of "payment" as a form of a contract payment or remuneration in exchange for their superhuman powers.
If you liked
Ayashi no Ceres
|
...then you might like
Bishoujo Senshi Sailor Moon
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Ayashi no Ceres gave me the very same feeling that I first had when I first watched Sailor Moon many years ago. Both series had princess or "princess-like" outer-space beings that fell in love with men that helped them but had a past that men don't remember. Both stories touched my heart that I didn't think an anime couple could.
If you liked
Bleach
|
...then you might like
Yuu☆Yuu☆Hakusho
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If you stick a red-hair wig on Yusuke Urameshi (the main character) you'll have Ichigo from the 90's. Both have tough, bad boy exterior that they portray at school. Also like Ichigo, Yusuke get paranormal abilities and somehow gets involved of a alternate world to help save this world from the probable evil with the help of their friends sharing unique paranormal abilities that fit their talents. And as a sidenote, there is shinigamis in both series.