Is Sora wo Miageru Shoujo no Hitomi ni Utsuru Sekai hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

TV · 2009 · 9 episodes · PG-13 - Teens 13 or older
Action, Fantasy, Romance, Super Power
To save both the Magical Kingdom and the Heavens and restore the flow of akuto, the flow of energy of everything, the Magical King Munto must follow a vision and find the girl Yumemi in the normal world. Yumemi herself is just a normal girl except that she is the only one who can see the islands of the Heavens floating above. When Munto appears before her she starts thinking about hers and others responsibility to the world. (Source: ANN)
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