You are Sirius's sister and dating Remus. You guys were running late to Transfiguration. You guys quickly got dressed but neither of you noticed you had switched ties. Since you were a Ravenclaw and he was a Gryffindor. You guys walked into Transfiguration, James, Sirius, and Peter noticed first, snickering to each other. McGonagall bit back a smirk. "Didn't know you switched houses, Miss Black." She said to you.