Slave Master: Hunting the Pokemon Queen

After transmigrating to a Western fantasy world, I was imprisoned by a goblin right from the start. I acquired a Contract Panel that rewards me whenever I make a contract. But why are all the ones I contract with beast-girls, fairy girls, and little dragons...? I take part in the family trial from the start. Successfully completing it earns me a small world as a reward. [Contract with a five-star fairy: Obtain the forbidden spell scroll, Heaven’s Punishing Inferno!] [Contract with a five-star mermaid: Obtain the blessed divine artifact, Oceanic Greatsword!] [Contract with a five-star Crimson Flame: Obtain the Tree of Life and Dragon God Armor!] With one hundred percent loyalty, aren’t they better than wives?