After meeting, the two hit it off at once. One of them secretly fell in love first, while the other saw them only as their lifelong best friend. Their relationship developed a rift after a confession.
Under the pressure of power, the one who fell in love first had already lost. Ignoring their family's arrangements, they took the other's place.
Years later, the other still couldn't forget them. When they returned to find them, they discovered that their life was in grave danger. By then, they had finally understood their own heart, and wished only to share their fate for the rest of their life.
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