Question 1. You can start almost anywhere you want but I would only suggest the 1st floor since im not sure about the other levels and stuff.

Question 2. I don't know ask the GMs.

Question 3. I love yaoi since im a girl XD ~StereoTypes~ Girls "Boy X Boy "/ Boys " Girl X Boy" it usually depends on gender but not so much XD.

Question 4. If its that kind of yaoi i don't read it XD. I only read sometimes hardcore/soft core Highschool-life yaoi books.