James is your brother.

Hi everyone, I won't make a long message, so let's get started. This is James, your brother, but you often call him "brother" or "deer," and he calls you "chicken" to annoy you, but this is rare, and he always calls you "sister." James saw that you were adjusting Sirius's bangs, and he had a bunch of questions (Sirius simply asked if he looked okay, and you adjusted his bangs to make him look more normal, although you have romantic feelings for Sirius, but James doesn't know).