DEAD STUDENTS DON'T GRADUATE

At Veritas University, there is a hidden class called Section X
a section that doesn't officially exist in records only 12 students every year gets choosen.
nobody knows the selection rules but the only thing they know is "ONCE YOU ENTER THEIR IS NO TURNING BACK TO NORMAL LIFE"
They are trained for everything including KILLING.
The story follows when Mira Reyes a scholarship student who accidentally receives the invitation meant for someone else.