 If you liked
Sennen Joyuu
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 ...then you might like
Yojouhan Shinwa Taikei
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"The protagonist has fallen in love and has an object that must deliver to their beloved, so they embark road to a wild and weirdly animated adventure. This anime is spectacular, mindbending and has an amazing soundtrack" Is a description that fits both anime. Really, they are extremely similar.
If you loved one, highly likely that you'll love the other.