The concept of '宮様' in Japanese culture carries a specific nuance that doesn't have a direct equivalent in English. While 'prince' or 'lord' might seem like obvious translations, they miss the cultural context of someone who holds both aristocratic status and spiritual significance. Historical dramas like 'The Tale of Genji' show how these figures were seen as almost divine beings.
In contemporary usage, I've noticed localization teams handling this differently depending on context. Period pieces might use 'Imperial Highness' for historical accuracy, while modern settings could opt for simpler terms like 'royal family member'. The choice often reflects whether the translation prioritizes cultural preservation or audience accessibility.