Mirai de Reiguu-hi ni Naru Hazunanoni, Nandaka Yousu ga Okashii no Desu ga...

Overview

Rose, the second princess of the Kingdom of Gridoll, has spent her life shunned by her family. One day, she has a vivid dream of boarding the luxurious cruise ship Princess Lea, only to be offered to Crown Prince Raphael of the Great Martin Empire as a substitute for her missing older sister, Lea, and condemned to a future as the "Neglected Consort." Just days later, Rose is ordered by her father to board the very same ship from her dream. Terrified, as each event begins to unfold exactly as she foresaw, Rose desperately tries to change her tragic fate. But her actions cause the future she saw to change, and Raphael appears to take an unexpected interest in her...!? A sweet, slow-burn romance filled with doting affection, where one prophetic dream changes everything, begins! (Source: MANGA MILLION)

Source: AniList