【Serial Version Posted!】 I'm a Saint, but I was cheated on and abandoned by the Prince. I'm so fed up that I've decided to live a second life in the frontier. By the way, the barrier protecting the royal capital is something only I can create, you know?

I am Cecelia, the prince's fiancée and a saint for the nation. However, the prince cheats on me with my younger sister, and on top of that, he declares our engagement annulled. I can no longer stay in the royal capital and head to the frontier. But... the barrier around the royal capital is something only I can create... Well, never mind. From now on, I plan to live a happy second life in my place of refuge. Serialized Version https://ncode.syosetu.com/n6612ks/ Original Concept: Hanyuu