Two worlds that somehow exist in parallel universes one of which is somewhere in the sky (or even space), a plain girl who has some powers to influence the fate of the world.
Surely, Escaflowne is far more better in all aspects but Munto is the closest to it in the idea itself and plot.
Both animes involve a female from earth having a unique power that is needed to help a king in another dimension (mirror of earth) - in order to save it. Escaflowne has more romance involved in the plot and is longer in length then Munto. If you like one, you will like the other.
Both are about young girls sought by beings from other dimension, as they (the girls) are belived to have the power to save the other world. Both are also protected by powerfull being from the same dimension that tries to capture the main heroines.
What struck me about Munto is how extremely similar it is to Noein. A young girl is sought out by people from another time and space because she has an important power that will save their world from destruction. The fact that the opening artists are the same is just an eery start, the characters, concept, mood, art style, animation, the setting, etc. all share lots of parallels with eachother. Obviously there are key differences between the two series, but it's definitely worth checking out the other if you enjoyed either of these series.
Slice of life anime with supernatural elements and similar atmosphere. Light colors and MCs gazing at the sky a lot, but the MC girl doesn't see the same sky as others - only she sees something mysterious in the sky or in Sola's case can't look at the sky at all.
Both shows are action shows made by KyoAni, which gives them a similar atmosphere.
A lot of the visual effects used in Kyoukai no Kanata were developed in Munto.
The plot revolves around a human girl with powers and her encounter with a demonic boy.
The main girls are very similar in their personalities. They both meet someone who has to do with "magic" and are given responsibilities that have to do with that "magic." Both girls have really good friends who they want to protect in some way.
Well the similarities are the floating continents in the skies in both series. In Romeo x Juliet it is the power of the tree Escalus which is nourishing the land and holding it in the floating state while in Munto it is the power of Akuto. Both worlds are about to be destroyed due to lack of power to sustain them.