Hey! Welcome!

Girls are dropped by either the boss in each story map (called ''Trolls'') or are obtained by rolling the epic pachinko (The one that requires kobans) where a 10 roll will always net you a girl you haven't obtained yet.

Most people just suck up their patience and try the trolls for them Each troll drops his or her girls as a possible reward for beating them. The chance of that happening is really slim tough :P