Kimi ga Shinu made Koi wo Shitai

Sheena lives in an orphanage where death is a common reality for the residents, girls trained from a young age to take lives as weapons of war. While her peers are comfortable with violence, Sheena wishes for an end to the growing conflict surrounding her. This desire is put to the test when her roommate dies, and she encounters a mysterious girl covered in blood, who turns out to be a new student named Mimi. Mimi's presence sparks rumors that she is immortal, and eventually becomes Sheena's roommate, forcing her to confront her own conflicting views on death and violence.