The plots aren't very similar, but when I think of She is Nineteen it reminds me of Shining Inheritance. Shining Inheritance is much better, but the feels are somewhat similar.
Both stories about a young girl getting married, except in this one, the girl is supposed to marry the main lead's brother. The drama that made me fall for Yoon Kye-Sang. It's old but still one of my favorites.
