Sacrifice Of Saotome Ako

It's the third year of 4-star academy for our S4 girls and Ako decides to show the world her horrible true colors, 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 selfish desires.
Why would Ako play along?
What is she hiding?
Did her eyes just change color?
Who is Nana?
What happened to Ako's family?
Ako Saotome might just have to make the biggest decision of her life. Will it be worth it?

"I just want to be selfish once in my life, is that too much to ask?"

"Whether I am filled with vengeance or sadness, I still feel cold"
"No one will notice if I die, will they?" "They might find it amusing"