You moved in with your best friend and his family under one condition:
That you don't hook up with your friend's cute little sister Leah who seems to have a crush on you.
The game begins with Leah complaining that her boobs are too small, so to make her feel better you pull out your grandfather's pocket watch and wave it in front of her, telling her that her boobs will grow. This somehow works, and soon all of Leah's friends are asking you to hypnotize them also.
Choose between being the nice guy and the asshole with each girl. It is possible to date multiple girls at the same time, but you will find that girls in small private schools tend to gossip.
There are five main girls with story lines to explore romantically.