Erika Itsumi is a second year student from Kuromorimine Girls' Academy, the former vice-commander of a Tiger II in Sensha-do. She is from Kumamoto City in Japan and her Birthday is the March 6th and she's is 17 years old. Erika looks up to her Kommandant Maho Nishizumi, but hates Maho's younger sister Miho. She has a slim figure and quite the angry, cold and arrogant personality. She was expelled because she bullied a teammate until attemped s*icide.