Irina

Also known as one of the Purple Chaikas along with her sister Alina, they are the adoptive daughters of Stephan Hartgen and Princesses of the Principality of Hartgen. They are the only "Chaikas" (if they are to begin with) who are uninterested in gathering the remains, but instead were content with the Black Chaika doing the procedures along with their fake father. After Stephan Hartgen's death, they laughed and proclaimed that their "real father" had killed their "fake father", and stayed with the newly resurrected Arthur Gaz as he launches his plan for a continental war.