18+ enter at own risk

Meet [Y/n] [L/n], an orphan whose life completely changed when he was adopted by Raven Branwen, a former huntress. He was taught by her of many things, especially how to fight. Now that he had reached 17, the headmaster of the famous Beacon Academy decided to enroll him without any conditions! What will happen to him from now on?! (This is harem, each characters would get their own individual chapters. But, the stories are still connected.)