Puella Magi Madoka Magica (2011)

S1E2 That Would Be Truly Wonderful

During their attempt to save Kyubey from Homura's assault, Madoka and Sayaka become lost within a strange, unfamiliar realm. Trapped and facing a dire predicament, they are ultimately saved by Mami Tomoe, a magical girl. Following the rescue, Mami extends an invitation for them to visit her room.