The 1997 classic anime film Perfect Blue proves that anime isn't just for younger audiences; anime can have mature, serious themes, too.

R-rated anime films offer intense action, gore, and mature themes that cater to a more mature audience. "Appleseed" combines 2D and 3D animation for a visually striking sci-fi and mecha experience ...

This rating is also the second one as such given to Demon Slayer as the anime’s first movie, Mugen Train, was rated R for similar reasons.