Is marriage a contract?

On their wedding night, Elvira is told "I will never love you," but she remains unfazed and secures a promise of divorce in three years. No one wishes for a marriage with someone who has been conducting a class-spanning romance since their school days—one so well-known that everyone is aware of it. She had no choice but to accept this marriage, which was forced upon her to protect her family. A young lady without romantic feelings devises and executes a path to support herself alone. However, her surroundings won't leave her be, and she is introduced to a certain young man... It's a happy ending. --- Thank you for reporting the typo. I have made the correction.