Yama ni Suterareta Ore, Tokage no Youshi ni Naru

Born and abandoned in the mountains, Hadar, picked up by an ancient dragon. With inherent powerful magical abilities, he is raised by the ancient dragon and, without realizing, becomes the "strongest being" capable of advanced magic at the age of 12. Hadar is sent to the most challenging magic academy by the ancient dragon to adapt to human society. However, he effortlessly dominates school life with his magical prowess!!...