Nina the Starry Bride 4 (manga)

With the hope of protecting Azure, Nina swears she will become the queen of Galgada. Unfortunately, the crown prince of Galgada, Sett is not easy to influence. Rather, he is a wicked young man who has never known love. Nevertheless, Nina suggests he gives loving her a try. While heading to the home country of Galgada from Bastella, Nina crosses paths with an even more dangerous beast...!!