"I Will Protect You", "I Wish Your Majesty Long Live"

I Want the Heroine to Be the Kind of Daughter Who Is the Legitimate Daughter of the Clan, the Kind Who Restrains Herself and Returns to Etiquette.

I want to read a book similar to "Bound Spring Love". The heroine's speech and behavior are in line with the characteristics of a legitimate daughter, abiding by conventions, not too deviant, and inconsistent with historical laws.