Origins

The third year of 4-star academy for our S4 girls but Ako is changing into a bully, or so did her friends think. When a horrible sister of Ako comes to her school and spreads rumors about ako being double-sided with horrible true colors. Ako doesn't do anything about it, but why? What is Ako hiding? Did her eyes just change color? Curse? Who is Nana? What happened to Ako's family? Who is Saotome Ako?