My name is Cassi. I am a panromantic, demi-sexual girl. (That means I have romantic attractions to all genders, but no sexual attraction unless there is already a romantic one.) 

I have a perfect life. I have these amazing powers, and familiars that help me out controlling them. I have four siblings, two brothers, two sisters. We all love each other. 
/\
 |  That paragraph, it's a lie. I'm not real. The first is true, just not about me. Except for the name. Cassi, not real. I'm a character. I'm a facade for an insecure girl who doesn't want the world to know who she is. Let's call her T. 

T is panromantic and demi-sexual. She has two brothers, parents that are always either in different places, or fighting. She has a crush on her best friend.