Reina Mashiro is one of the child from Pureblood Families in Vampire World. Her parents are either friend or rival with the King, Ryoma Ryuuzaki. Since her parents often pay visit to Ryuuzaki family, she start to play with Prince Hiromi and his best friend Kaito Doumoto.
She becomes really close with those two and develop a feeling with Hiromi. Happily, he seems to have the same feeling with her. But, one day on her 20th birthday, she overheard someone said Hiromi was ordered by the king to make Reina fall in love with him so that the king wins a bet with his rival which is her own parents.
And when she asked her parents about it, she also ordered to seduced Hiromi to fall in love with her. This is the last bet from their parents.
How their story will end? Who will confess first and lose the game?
*Note: All picture in this story are belong to its creator and not mine, I used it only for references so all of you can have same picture in their mind while reading