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.
Les Yay: Dear God, where do we start!? Well, chronologically, the first instance is when Chiaki glomps Yuuki and starts fondling her breasts...which, it should be noted, is the first time we saw a girl within five feet of Yuuki.
And let's not forget Freya's attempted rape on Yuuki. One of the few examples to not be played for laught.