Girl will keep being helpless and cute and somehow win the boys over one by one. Tall, Dark, and Snarky will continue to be tall, dark, and snarky while practicing his sword skills and just generally being cold and unpleasant.
On the quest for Girl's father, Dr. Daddy, she will be taught sword skills by Tall, Dark, and Snarky, with the other men occasionally pitching in, but generally leaving it to TDS because he is the best swordsman of them and, therefore, must also be the best teacher.
Someone (probably Glasses or Redhead) will confess their love to Girl, but she will reject him as sweetly as she can because she is starting to develop feelings for TDS, despite the fact that he has never shown her any more kindness than telling her that they're going to continue keeping her prisoner but they won't be such huge dicks about it.
Meanwhile, the people linked to her father's disappearance and all the other weird **** going on will attack them while they're searching. Girl will be half an inch away from being killed when TDS will step in and save her. He will then proceed to insult her about how careless she is, using a code that, in shoujo and reverse harems, really means "Love you, you stupid bitch."
There will be UST for the rest of the series and Confession Guy will continue to pine after Girl. At some point they will find Dr. Daddy and any other information regarding the plot (which is really just a vehicle for getting Girl and TDS together) will be resolved.
The final scene will be incredibly deep and dramatic and the whole thing will culminate in Girl and TDS realizing their true feelings for each other and living happily ever after.