 If you liked
Aa! Megami-sama! (TV)
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 ...then you might like
Kobato.
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Both definitely fit the mold of the modern Magical/Mysterious Girl formula created by Urusei Yatsura years ago. Both feature mysterious otherworldly women who come to Earth on a mission and end up falling in love with all the consequences that it entails for their lives and lovers. I think many fans of Hanato Kobato or the Goddess Belldandy will likely find the other appealing, I heartily recommend either to fans of SoL, Romance, or Magical Girl Animes, both also contain elements of Supernatural/Divine drama as well.