Four years have passed since the Clow Cards have turned into Sakura Cards and everything is back to normal. But when new monsters suddenly start threatening the city, Tomoyo feels unable to protect her friend. So what happens when a furry cat-like creature offers to make a contract with her? To have her become a magical girl? Thank you to Five Tailed Demon Dog for the inspiration

When evil threatens those she loves, one girl makes a choice that forever alters the timelines of two dimensions. Yet when an old enemy takes advantage of this new future, the cat-like creature Kyubey comes along and offers her a choice: He will grant her one wish...and in exchange, she will become a front-line fighter in an ancient war against magical creatures known as...witches.

Madoka opens a book she wasn't supposed to, and a cute magical critter wants her to help him.

To aid her precious Sakura to fight those new strange creatures, Tomoyo will do anything. A cat-like animal hears her desires and offers her a way to help, "Daidouji Tomoyo, make a contract with me and become a Magical Girl!" Cardcaptor Sakura/Puella Magi Madoka Magica drabble