You decided to go to one of Yiane's parties. She lets everyone no matter if she invited them or not. She does it because she doesn't want a "boring" life. Plus she doesn't know what to do with all her daddy's money.

The mansion you arrive it is as big as your school. You enter the place. It's so full of people, that there is a 90% chance that most of the neighborhood is here. Most are drinking or playing games. Some are talking, some are going home already, some have passed out, etc.