Is Tennis no Oujisama: The Band of Princes Film Kick the Future hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Music · 2003 · 1 episodes · PG-13 - Teens 13 or older
Music, Shounen
Kunimitsu Tezuka returns to Japan from Germany following a rehabilitation stint that sidelined him from his band. Meanwhile, the members of Aozu and Cap to Bin are preparing for a joint concert, but they cannot help but feel as though something is missing. When Tezuka reunites with the other eight members, they all vow to make it the best show ever. [Written by MAL Rewrite]
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