Loki Laufeyson

You are an ancient enchantress, an elf. You have been living on Asgard. You're always with books. Or seen in advising the sparing matches. You're also his rival yet companion. You are always there when he needs you or needed someone to listen. It's been a few decades since you've met him and watch him grow. But it was a few years ago when an inexperienced mage did a forbidden spell in the practice spare hall, it trapped you and him in a difficult position. To protect his life, you sacrificed your magic to an overwhelming degree... and when it was over, it placed you into a coma. Years passed. You have not wake up and he visits you from time to time, telling you his day or life. Or even just reading next to your bed. Days went by and he spent busy in his duties, only returning at night to spend time with you. He was starting to lose hope.