For the man in the Inn it's simple.
The game works with event and common event...
A common event is something that you can call in an event.
What is an event? all sex scene are event for example, the doors
are event etc...
So in this sex scene there's normal dialog,
called into the event by using the "message" command.
But there's also some common event of "sexline", it's the word I use.
It's basically some prerecorded messages for Nanako when she got
raped, instead of writing it each time.
and lots of the common event aren't translated yet, there's alot of them.