Kim Yushin
The series adopted significant artistic license regarding the portrayal of historical events in order to accommodate the dramatic storyline. Notably, the reign of King Jinpyeong was compressed by over two decades such that in the series, Queen Seondeok was born within a year of his coronation (her actual date of birth is unknown). Accordingly, the preceding King Jinheung's reign was extended by a similar period, with him being depicted as an elderly man at his death. This allowed for Mishil and other prominent figures during Jinheung's reign to be involved in events concerning the Queen during her time as Royal Princess, even though there is no evidence to suggest what sort of interaction the two had if any. Artistic license was used to imagine her as being of a similar age to Kim Yushin and Bidam, though again, it is not clear historically if this was the case. Another major change was in the date of her death: Bidam's execution and Kim Alcheon's appointment to his post were ordered by Jindeok of Silla, ten days after Queen Seondeok's death. Queen Jindeok is not mentioned in the series. More subtly, the real Seondeok likely never left Silla (stories concerning her childhood in the palace survive) and did not know Latin.