Okay, um... basically, the Inexperienced role is supposed to be an actual mage/onmyouji who has not really been able to practice their skills. They know magic, but they haven't gotten to really use it outside of, well, training it. Ideally it'd be a mage student from a Circle or even prior to that, which means they'd be college-age or teens(which your character falls into college age just fine but yeah).

Sorry, they're just supposed to be a bit more of a mage then that.