James Potter and the annoying Twin Sister

James Sirius Potter is the oldest of the 4 Potter children. His little brother, Albus, is the smartest (and nicest) Slytherin he's ever met. And his little sister Lily has a heart of pure gold, always ready to find the good in anyone or anything.

But, contrary to what he might tell you, he does have a favorite.

She can be annoying, but she is his best friend, his tutor, his consultant and much, much more.

But the most important thing Josephine Rachelle Potter is to James, is his twin sister.