Is it mandatory to use the cameras?
yep, at least to discover them
If it's only mandatory to discover them and after this I can remove the cameras, it's ok. I'm not fan of spy the girls with cameras.
But that's like, the point of the game..?
I believed that the point was for the janitor to get a romance with the LIs, because of the word love.
thats our objective, but stories will take some more time :)