Wanna Make A Bet?
Santiago Mendoza was rich. His family has been coming to this school for generations; besides Kira, he runs the school. When the new student Yumeko joins, she grabs his attention. She dominates the games quickly and, above all, like him, she doesn't cheat; she's in it for the love of the game, same as him.
Santiago is bored, bored with the school and the people who fill it, but when Yumeko comes into the picture, he finally finds himself entertained as the queen B of the school struggles to keep her crown.
Will Kira and Santiago realize what was in front of them the whole time? Will the enemies finally become lovers, or will there be a fight to the death?