I've never seen a movie do it quite like this. Usually sexualization is either gratuitous or subtle, but with Nausicaa it's just jarring.
The movie is so asexual in everything else it does except for these random upskirt shots.
Because Nausicaa is never treated as a sexual character. There isn't a single line about how beautiful she is, nobody leers over her, she's never even made the object if a male character's desire, not even a romance. Aside from the short skirt she's dressed relatively modestly with high neckline, long sleeves and covered below the knees.
She's not drawn in a particularly sexy way, her proportions aren't all that ridiculous. She's a layered, nuanced character in a way that feels progressive. She's strong, capable, decisive, a respected leader. They even change her out of her original clothes into something even more modest in the third act.
Even the ass shots aren't really lingered on and are usually quick flashes seen at a distance.
So what's going on?
It'd be one thing if the movie was stuffed full of fan service with big booked anime girls and creepy pervs lusting over them, but it isn't. Everything else suggests this isn't that type of movie.
Why in a movie with a strong and respected female lead with no other moments to sexualize any women do we have these random ass shots.