Puella Magia Madoka Magica: Issho no Hikage

Maho no sekai ni sumou (Chapter 0)

She sits over her, rain pouring down on their heads, making her hair wet. She'd wipe her tears on her sleeve but she couldn't see it.
"D-Doremy-San!! Please, don't leave me and become a witch..." she'd say, between cries.
The blue haired girl slowly put her hand on the other girl's cheek.
"Sagume-San. I'm sorry. But this is how it's supposed to go, isn't it? We were all supposed to be witches one day."
"Please, no!"
The white haired girl would scream out. Her right wing was bleeding. Swords had stabbed through it, ripping it off. She couldn't bear the pain. The ripped wing was making it hard for her breathe. "Doremy-San...just stay in my arms...one more time..."
She'd say, holding the girl's hand, and fixing up her hat.
"Sagume, please stop caring for me..."
"You'll die!"
Rewind time.