Akuyaku Reijou no Yuigonjou

Lielia, the daughter of the wealthy Schwilautz family—owners of the greatest fortune in the kingdom—has her engagement annulled by her fiancé, the First Prince, on the very day of their wedding. Leaving behind only the words, “Farewell, everyone,” she disappears, and shortly afterward, news of her death spreads across the kingdom. But the disturbance only grows worse when her will is revealed: “To the one who marries me, I shall bequeath everything owned by the Schwilautz family.” What is the true meaning behind this will? What really happened to Lielia? A captivating mystery where the thoughts and motives of many intertwine!

(Source: Hifumi Shobo, translated)