Indigo Zap was the star athlete of Crystal Prep Academy. Way more athletic than she had any right to be, and always looking for a challenge, she helped the school's reputation immensely. Everyone respected her.
But no one knew what lied beneath the surface. No one knew why she was such a loner, even by Crystal Prep standards.
She rarely, if ever hung out with others, often rushing back home after practice. And she rarely called or texted anyone, and no one even knew what hobbies she had. That was by design, because Indigo didn't WANT them to know.
After all, how could they understand her obsession when even she didn't?
Edit (9/15/22): Edited a small detail about the number of sketchbooks. Not too important, but simply made the number smaller to fit new continuity details.