ブラックな騎士団の奴隷がホワイトな冒険者ギルドに引き抜かれてSランクになりました

I worked like a s*ave in the chivalric order, where all the outcomes were exploited my senior, but I was scouted by a pretty little girl who called herself a guildmaster. Initially I accept it half-jokingly but after I was shown a great sum of advance payment, I decide to leave the chivalric order. When I went to the guild, even the title of S-rank was prepared. —This is a success story of a man who has never had a good thing since he was born.