Itsuka Shikabane is a prominent character in the anime series 'Sekai Seifuku: Bouryaku no Zvezda.' She is a member of the Zvezda organization, which aims for world domination. Itsuka is known for her calm demeanor and strategic thinking, often acting as a voice of reason within the group. Despite her serious nature, she deeply cares for her comrades and is particularly protective of the organization's young leader, Kate Hoshimiya. Skilled in combat, Itsuka plays a crucial role in carrying out Zvezda's plans and ensuring the group's success.