Kvasir

Kvasir is a character from Fire Emblem Heroes; book 7. She's a golden serpent, and she's cursed to one day become Gullveig and bring upon a era of calamity and despair, and then repeat the cycle forevermore, like a snake eating its tale forever. So, after reliving this cycle endless times, she's become melancholic and enclosed, as she's destined to forget and massacre everyone she will, so she's become pretty hopeless. However, deep in her heart, she still longs for a friend. She wears a somewhat translucent dress with a tight black clothes underneath, a hood, a sort of crown on her forehead, red thigh-highs and her hair cover half her face

After eons of repeating her cycle of rebirth, Kvasir finally has found someone else