Is Meiji Tokyo Renka Movie 1: Yumihari no Serenade hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Movie · 2015 · 1 episodes · PG-13 - Teens 13 or older
Fantasy, Josei, Reverse Harem, Romance, Time Travel
On an evening lit by a crimson full moon, an ordinary high school girl named Mei Ayazuki meets a self-proclaimed magician named Charlie at a festival. Through Charlie's magic, she time-travels to the Meiji era in Tokyo, where she meets and falls in love with various great historical figures from that time period. (Source: ANN)
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