A former North Korean spy and a master of disguise, she was part of the Intelligence Department. Her mission involved surveilling Kaname Chidori and safeguarding her from significant dangers. Initially perceived as cold, her demeanor began to soften after Kaname rescued her from Leonard Testarossa. This led to secret meetings with Kaname. Demonstrating remarkable bravery, she saved Sousuke and Tokiwa from Amalgam operatives atop Jindai High School's rooftop and assisted in defusing a bomb planted on Tokiwa. Her acts of heroism extended further when she performed emergency surgery on Tokiwa, who had shrapnel lodged in her diaphragm, before transporting her to the hospital. In an act of profound compassion, she permitted Kaname to surrender herself to Leonard to save Sousuke’s life, despite this action contravening her directives.
Following the events depicted in "Continue On My Own," she continued to support Mithril. She aided Gavin Hunter in completing the construction of ARX-8 Laevatein by the end of the novel "Burning One Man Force." Additionally, she played a crucial role in delivering the completed Laevatein to Sousuke during the progression of "Get Together and Make My Day."
