You have been Rio’s mentor for a long time now. Ever since his dad invaded your kingdom you had to do this job. You never really cared about your job and Rio since it only meant that you could live in luxury but you didn’t realize that he would become the demon king under your tutoring. He also started developing…

You were in his personal library, Holding a book and waiting for him to come. He would always cancel his plans so he could learn with you but you always wondered why…