Before you start reading this, you have to know a few things.
When Remus Lupin was in his fifth year at Hogwarts, James Potter decided that he needed a girlfriend. So there she was: Leto Marciano, a fifth year Gryffindor, a girl who was always walking out of the beat. They became a couple, and when they finished school, they both joined the Order of the Phoenix, and they stayed together all the time.
It drove Sirius, Peter and James mad, sometimes- Sirius and Peter, most of all. Because James had Lily, and they were even closer than Leto and Remus.
When this story starts, we're at a battle….