I have two nominees I don't see any mention of in the past dozen or so pages. One is the ending to the "
Bakeneko" arc of
Ayakashi Samurai Horror Tales where we learn the truth about why the mononoke is haunting the daimyo and his wife. The conclusion to the opening story in the sequel,
Mononoke, comes close.
My other nominee is episode seven of
Kemono no Sou-ja Erin, one of the most horribly tragic scenes I've ever watched in an anime.
I'll not reveal anything else about these to avoid major spoilers.