Girls attending a school that raises children without a place to go as weapons of war. A daily life where lessons are about killing people, and it's hard to even feel sad when someone dies. 14-year-old Shina, who cannot accept her situation, meets a blood-soaked little girl named Mimi one night. Shina, who longs for peace, and the immortal Mimi, who smiles as she heads to the battlefield. This is a story about the innocent wish that the two girls find in a world always accompanied by death.