A CONTRACT BETWEEN A FINAL BOSS AND A SAINT Contract

Evette Rose Herrington, the daughter of the prime minister of Richfield kingdom. That's me. However, I have been working as a royal mage under a fake name in order to avoid my fated death. The truth is, this is my second life. From my past life knowledge, I know that my engagement with the prince will reach me to a very bad end because the prince’s fated love is the saint. Unable to stand at the couple, I eventually will go wild possessed by my own jealousy and finally, I’ll be killed.
However, on the day of the summoning ceremony, the arrived summoned saint turns out to be a man. Not the prince’s lover. So, now I can hope to safely love the prince right? Nevertheless, I must still be on guard. For safety factor, I will make a deal with the saint to help my love go well.