Indeed, “Grave of the Fireflies” was the first ever, and so far only, movie that has brought me to tears. If anyone ever questions if an animated movie can ever convey emotions like “real” movies, think of this masterpiece.
TLDR; in Japan an animated movie is a real movie.
Experience says there won't be a repeat viewing.
What about "Life is Beautiful" and/or "It's a Wonderful Life"?
I used to live in state college, pa.... the State Theater (name of the cinema, not a state run theater ) there would have showings of it around Christmas time. I would highly recommend.