You've probably already watched this but, Hotarubi no Mori e. This has been sitting in my list for years lol. I remember it from that one famous yt video.
I remember crying particularly throughout half the last episodes of "Crash Landing on You" (k-drama) Also, recently read a wonderful manhwa "My Beloved Oppressor"
Recommend me sad breaking heartwrenching tear falling hand gripping anime movie pls. I just wanna cry