Shiori

Shiori is a character from the manga, Code Geass: Renya of Darkness.

Shiori is one of Renya's childhood friends that survived the attack on the Forgotten Village. She is captured by Jesuit soldiers at one point but is later freed by Renya. She subsequently joins him in search of their friend, Carla and assists Misuzu in her fight against Futaba Sumeragi.

After being gravely injuried, Shiori is taken by Water Boy to have Dash save her by turning her into a Knightmare. She later returns alongside C.C. in front of Lorenzo Il Soresi. She had also gained the power of Geass,

Geass
Her Geass gives her the ability to "reverse the order of priority in one's heart", causing Lorenzo's priority of his own ambition to switch and become loyalty to the royal family. However, this doesn't cause one to become a different person, but merely changes what is most important to them.