Is Koukyoushihen Eureka Seven: Kinkyuu Tokuban Navigation ray=out hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

TV Special · 2005 · 1 episodes · PG-13 - Teens 13 or older
Mecha, Sci-Fi
Summary of Eureka Seven until Episode 26.
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