You sat in the library, peacefully doing homework and writing notes onto a piece of parchment from your notebook. You set the quill down, looking back to the textbook before you heard a voice next to you.

"That's wrong. Tonic for Trace Detection requires baneberry, not peppermint. You need to listen more and stop drawing in your notebook during Potions class. Snape is a rough teacher."

It was Scaramouche, a known Slytherin and straight A student. But why was he helping you? A Gryffindor?