Married Off to the Serpent Clan Leader, My Orc Childhood Sweetheart Regrets Everything

At the post-grad pharmacy contest, my adopted sister Jade rose to stardom with a stolen potion of mine. The event turned out to be a bride-selection trial for the cruel, unattractive heir of the serpent clan, cursed with infertility.
Terrified, Jade sought refuge; my fiancé bound himself to her via marriage contract to keep her safe, and my biased parents agreed to wed me off to the serpent lord. When Jade’s deceit was exposed, the group rushed to apologize and plead for mercy. The serpent ruler waved them off sharply: “Scram, disgusting bugs! Don’t go near my spouse!”