Ou-sama ★★ Game

A continuation of a royal-themed game series. A prince is sent to another nation as part of a political agreement but ends up held by an authoritarian ruler. Another prince, once frail, was cared for by his older brother, who learned medicine. Though now strong, the younger prince is still seen as weak by his brother, prompting a change. A fifth prince flees the palace and ends up on a pirate ship, becoming the captain's companion.