"Become a princess and tell the future through sex." Aya thinks she'll get permission to marry her childhood sweetheart Yuuta on her 20th birthday, but instead she finds out that she's bound by blood to predict the future through sex and orgasms. From that day on Yuuta becomes Aya's servant, and Aya must marry his playboy older brother, Daiki. A love triangle controlled by fate...

from Renta!