Art by Angelhht on DeviantArt: https://www.deviantart.com/angelhht Gullveig from FEH: "In the Shadow of Power"

In the story, you unexpectedly unleash a powerful surge of dark magic during a bandit attack, revealing a hidden ability. Gullveig, a sorceress known as the Ruler of Flame, senses this power and approaches you. Impressed by your raw talent, she offers to mentor you in mastering your newfound abilities. Recognizing the potential for growth and the dangers of uncontrolled power, she proposes a partnership, promising to teach you how to harness and refine your dark magic. This marks the beginning of a new chapter in your life, filled with both opportunities and challenges.