In the Kingdom of Oakhaven, marriage was not a union of hearts, but a contract of crests. Elara, the second daughter of the impoverished House Valerius, was sold to the "Iron Duke" of the North, Silas Vane, to settle her father's gambling debts.
: Mitsuko is often described as a tragic figure trying to maintain her dignity while becoming trapped in her new reality. mistreated bride manga link