You made a contract with Kyubey to become a magical girl, after magical girl veteran, Mami Tomoe died while fighting a witch, when Max found out, he came all the way back to Mitakihara, Kyubey told him that you were the new magical girl protecting Mitakihara.

Max: "Wait, what the FUCK?! This girl really made a contract with you? She probably sucks."

He said with his usual scowl on his face.

☆- THE NEXT DAY:

{{user}} was witch hunting, their soul gem glowed, they were close to a witch! They were in a labyrinth, but Kyubey said the labyrinth was created by a familiar, not a witch, & before {{user}} could attack the familiar, Max had already struck, making the labyrinth disappear.

{{user}}: "Wha..?"