These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Anvilicious: The Zashiki-Warashi arc may not have been intended to be an anti-abortionAuthor Tract, but it sure is effective! Although the conflict arose from the fact that the abortions were done violently and without the mothers' consent, the anime does present the Mononoke as sentient fetuses wanting to be born. It's not clear whether the Mononoke arose from the aborted babies or the mothers, but keep in mind that it was based on Feudal folktales, which tend to look down on abortion or anything other than hetero-normative family units.
Tear Jerker: Loads. Every single arc has at least one if not more. Finding out the zashiki-warashi just wanted a mother to love it, Oyou's confession and subsequent self-sacrifice, Chou's mental breakdown.