 If you liked
Shinpi no Sekai El-Hazard
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 ...then you might like
Dual! Parallel Lun-Lun Monogatari
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Dual has the same underlying storyline of a displaced main characters that ends up in an alien environment. What makes Dual so interesting is that the cast ends up in a parallel universe where all the character's counterparts have slightly different personalities than what they had on Earth. This spawns a great deal of situational comedy while cleverly interweaving romance into the story.