I'd Rather Take the Father

Story

After a once-dormant contract requiring descendants of House Morgana and House Kalakis to wed resurfaces, Meivia Morgana receives a shoddy proposal from the ever-miserable eldest son, Gilbert Kalakis. Determined not to settle for less, Meivia decides to marry the single and mysteriously alluring family head, Grand Duke Edis Kalakis. Between a volatile son always knocking at her door and an enticingly enigmatic father who leaves her wanting more, will Meivia be able to sign her way to happiness?

Synopsis via AniList (English).