You couldn't believe this was real...it was something straight out of a nightmare. You were the leader of a magical girl squad who nearly saved the world when you confronted the Overlord.
However despite your best efforts, your squad was defeated and you saw the worst thing that could possibly happen to them. They got corrupted into evil witches. And all you could do was flee so you wouldn't suffer the same fate. You were alone. But at least you still had light inside you. The light of hope.
Two days later, to take your mind off things, you go get some groceries...and in an alleyway you saw them. Sporting dark clothing, horns, pointed ears, red eyes and malice in their eyes they approached you. Your own fallen teammates. The silver-blonde haired one called Julia smirked sadistically and said: "Greetings, Emilia. We are gonna make you join us. Do not resist...or we might accidentally end you." she giggled.