A former North Korean intelligence operative and expert at going undercover, she was assigned to shadow Kaname Chidori and keep her safe from serious danger. She initially came across as distant and professional, but things shifted after Kaname actually rescued her from Leonard Testarossa—that moment seemed to crack her cold exterior, and she's been quietly getting closer to Chidori since then.
She's proven herself willing to bend orders when it counts. On the Jindai High School roof, she saved both Sousuke and Tokiwa from Amalgam assassins and helped defuse a bomb rigged to Tokiwa's body. When shrapnel tore into Tokiwa's diaphragm, she performed emergency surgery on the spot before getting her to a hospital. Later, she let Kaname turn herself over to Leonard in exchange for Sousuke's life—directly going against her mission orders to do it. Her compassion has clearly grown, even if her spy training still shows.
Content compiled by AnimeList.moe from publicly available sources.