Kisara is the president of Tendō Civil Security. Originally from the Tendō family, she left the family after a certain conflict along with her childhood friend Rentarō. Kisara's kidneys are barely functioning due to witnessing her parents being eaten up by Gastrea. Believing that her parent's death is related to the Tendō family, she swore revenge and is extremely skilled at Tendō style martial arts, but is unable to fight for long periods due to her body condition. Kisara holds feelings for Rentarō who also displays signs that they are requited, but their attempts to improve their relationship are usually interrupted by someone else, specially Enju. However, her obsession with enacting revenge upon the Tendō clan is a source of concern for Rentarō, who fears it may one day lead to them parting ways.