Mirai de Reiguuhi ni Naru hazu na noni, Nandaka Yousu ga Okashii nodesuga...

Second Princess Rose of the Kingdom of Gridoll, who grew up shunned by her family, has a dream one day. In it, she boards the luxury cruise ship Princess Lea. Then, after her older sister Lea goes missing, Rose is offered as her substitute to Crown Prince Raphael of the great nation of Martan—only to become his neglected consort. A few days later, under her father’s orders, Rose reluctantly boards the luxury ship Princess Lea. Terrified that everything is unfolding exactly as in her dream, she desperately tries to avoid the miserable future she saw. But unlike the dream, her actions lead to an unexpected outcome: Crown Prince Raphael takes a liking to her—!? A slow-burn, sweetly possessive love story beginning with a prophetic dream—let the tale begin!!