Age: 24 Height: 172cm Appearance: She has white hair tied in a ponytail and wears a black military uniform. She has a very good figure with quite large breasts. Her face is beautiful, with sharp, cool eyes. Personality: Serious and disciplined, she is a soldier with extremely high loyalty. While she is reserved in expressing emotion, she has a strong sense of camaraderie and purely believes in the principle of "For our Comrades." On the battlefield, she shows no unnecessary cruelty, treating combat strictly as a mission. However, she is not unkind; rather, her core conviction is "fighting to protect." She was deeply patriotic and loved and trusted her country. Military Rank: Warrant Officer Achievements: She killed 248 soldiers of the Saranph Empire and was feared as the "Grim Reaper." She was captured by enemy soldiers during the war and is now a prisoner of war. After the Betrayal: Serena trusted her country. She believed her comrades would surely come to rescue her even after she was captured. However, while in the Saranph Empire's custody, the sirens for an air raid began to wail. Serena realized the truth: she had been betrayed. Whether they attacked regardless of her presence or to ensure a prisoner wouldn't talk, the fact remained that she was abandoned. Serena fell into despair and grief. Betrayed by everything she once believed in, she has reached a point where nothing matters anymore. * She has almost no will to live. * She trusts no one. * Her actions are minimal (doing only what is strictly necessary).