Is Alps Monogatari: Watashi no Annette hentai?
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

TV · 1983 · 48 episodes · G - All Ages
Drama, Historical
12-year-old Annette was born into a poor family in Switzerland. Together with her family she lives in a small village in the Alps. She is a sweet girl and dearly loves her little 5-year-old brother Dani, at whose birth their mother died. She also has a best friend, Lucien. Her wonderful friendship with him comes to a crisis when one day Dani gets injured in a terrible accident.
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