Retire the Clan at the Beginning: I Can Get the Monster Profession!

In this fantasy medieval world, everyone awakens to their profession at the age of 18. [Farmer] I have been a farmer all my life, and I can only devote my life in obscurity. [Knight] Being a knight all your life, you can only rule the world with great force. Traveler Xia En feels that the world should not be like this... But he awakened [Farmer (First Level·Special)] and pulled the big one. Therefore, he was kicked out of the house by his father and demoted to a free man to guard the farmland. However, when he killed the goblin, he discovered that he could take an additional job [Occupation: Goblin] and get a second career! And when you kill a kobold and get [Occupation: Kobold]... Discovered that the [Kobold] actually ate the [Goblin] and evolved into [Occupation: Green-skinned Kobold], gaining the power of the Green-skinned Kobold! Next are the Big Goblins, Trolls, Minotaurs, Succubi... Until I take office [Dragon] and gain the power of the dragon, use my power to change this decadent world!