Is Ijigen no Sekai El-Hazard hentai?
English title: El Hazard: The Alternative World
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

TV · 1998 · 13 episodes · PG-13 - Teens 13 or older
Adventure, Comedy, Fantasy, Isekai
Miz plans to retire as a Great Priestess of Water to married life with her darling Fujisawa and as replacement the young Qawoor Towles arrives to Floristica. Jinnai sees Qawoor's initiation ceremony as a chance to infiltrate Makoto's laboratory but accidentally activates a mysterious thingy that sends them all through the dimensions to a grey industrial city protected by a huge castle in an alternative world. (Source: ANN)
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