Momoi Manami

Her plan is to get pregnant and blackmail her boyfriend into paying her off so he doesn't have to raise the child. Though she has no intention of keeping her pregnancy once she gets the money. Her boyfriend -- like Manami herself -- is a player that has multiple girlfriends. However, she doesn't let on for fear he would break up with her before her plan is complete. Neither of them really seem to like each other beyond their money/sex appeal.