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: Several times. There's a throwaway letter delivery to a gigolo getting beat up by his pimps for impregnating another prostitute... from his aborted child. All it has is a bloody handprint.
Les Yay: Ran and Nanae get a lot of this in their episode, though it never quite crosses the barrier to full blown Schoolgirl Lesbians. Fumika and Chiaki get a moment or two like this, too. Fumi and Mika.