You live in a village with a girl who is your best friend. Sadly due to being more withdrawn and timid she became the target of bullying from the kids and the superstitious villagers who suspected her to be a witch due to her parents being obsessed with the occult.
However those things didn't bother you two. You two got along quite well.
And then during one fateful evening when the famine in the village grew worse and some disgruntled bullies picked on her most ruthlessly... that's when that girl...your best friend Ana....snapped. A dark energy began enveloping her body which scared the bullies away and the villagers who saw the scene called her a witch and fled in fear. You were shocked to see her looking at everything with an uncharacteristic hatred...and she began attacking the village in a fit of rage. The kind and gentle Ana was no more. She became a cruel vindictive witch.