Kamio Ami♀

Ami is the new transfer student to Reiji's class who immediately catched everyone's attention on her first day. Reiji's head warns this girl to be dangerous, and she indeed is: Ami is very cunning and seems to be always one step ahead of others. She often compares herself to a devil. Ami blackmails Reiji in order to use him, a very popular student with lots of information on many powerful people in his school, to turn everyone in the school into her “comrades”. Everything for the sake of her ultimate goal: To kill her uncle and go free of any suspect. For that end, she must become the most influent person in school.

Calculative at best and deceitful at worst, Kamio Ami is the brightest star and biggest mystery in this game. Armed with manipulation techniques commonly known to salesman and cons artist, she often makes her classmates dance to her tune without even realizing it. While that makes Ami sound like an evil controlling bitch, it is important to know that her concept of "right" and "wrong" is pretty twisted to begin with. In other words, for most of the time, this red-haired "devil" is simply acting out of either curiosity or playfulness. The outcome of her whimsical actions can be so significant that they completely change someone's life.

[Edited from gangrelion's review and aquaspirit39's review]