Depends on what the raws say, but I guess it could be distinguishing 百合 (pure feelings between girls) from simply レズ (girl on girl smut regardless of actual sexuality)?
Just a heads up that the next release will likely be the pre-serialization oneshot. While it is a different beast to what we have now in many ways, there are some familar story beats so there may be potential spoilers for what lies ahead in the serialization.
Another fix from rechecking the raws
p18
I had so much more sex than usual
that you wouldn't have thought it was a two day campus festival. (ie. they sure fucked a lot in just two days)