The Forbidden Dark Princess

[Dead Mizui awakens in a dragon village where there's a worried-faced beautiful mother, a taciturn father (?), a flirtatious demon uncle who visits occasionally, and many dragons. The grown-up Mizui, disguising her hair and eye color, heads to the royal capital for the prestigious academy of the magical nation. There, she meets the First Prince and the Duke's Third Son. —Wait, wait, wait. Am I really in such a troublesome position!? Well, if I can get through three years without being discovered, I can return to the village. Then I can live a peaceful, self-sufficient life with my family and the dragons! ...Yeah, there's no way that'll happen. Trouble chases after me and catches me—it's my standard equipment to run from problems. So, I'll just struggle as much as I can!! Surrounded by the notorious Viscount family's twins and a beautiful baron's daughter, even a commoner will do her best.] I can't write difficult tactical theories or magical academic discussions! ← [The story is convenient and cheat-like, yet oddly dark. Plus, the hero doesn't show up until late...] I'll add more if I think of selling points...