During the Black Knights attempted kidnapping of Empress Tianzi, Kallen is captured by Li Xingke in his "Shen Hu", having taken her "Guren" into battle without replacing its energy filler. After the High Eunuchs turn to Schneizel el Britannia for military support, she is turned over to Suzaku along with the "Guren". She is sent back to a prison in Area 11, and subsequently transferred into a more comfortable solitary cell by Nunnally, who also gives her a dress to wear. Suzaku approaches her after Shirley's death, intending to use the Refrain drug to find out if Lelouch has become Zero once again, but cannot bring himself to do it because he refuses to stoop to Lelouch's level. In retaliation, she beats him severely during their next meeting when Suzaku tries to apologize.