In the Naruto series, Naruto Uzumaki asks Hinata Hyuga to marry him in "Naruto: The Last - Naruto the Movie," which is the tenth Naruto film. The movie is set between chapters 699 and 700 of the original Naruto manga and serves as a continuation of the series, showing events that happen after the Fourth Great Ninja War.
In "Naruto: The Last - Naruto the Movie," Naruto and Hinata's relationship is explored in more detail, and Naruto finally realizes his feelings for her. He asks Hinata to be with him forever, which can be interpreted as a marriage proposal. The movie was released in Japan on December 6, 2014, and it's a significant moment in the Naruto storyline for fans who have been following the development of Naruto and Hinata's relationship throughout the series.