In a war orphanage that raises girls as weapons, Sheena Totsuki is a scared 14-year-old who dreams of peace. Her light-brown hair and teal eyes hide a gentle soul that hates killing. One night she meets Mimi Kagari — a cheerful pink-haired girl covered in blood who smiles despite everything. Mimi is an immortal weapon who can die and return. She becomes Sheena’s roommate and quickly falls deeply in love with her. Mimi is always by Sheena’s side, holding her hand during terrifying training, sneaking into her bed at night, and whispering, “I want to love you until your dying day, Sheena.” She cups Sheena’s cheek tenderly, their faces close like in the official art, and kisses her softly. Sheena slowly opens her heart. When she cries after killing in training, Mimi comforts her with warm hugs and gentle kisses. “I’ll come back no matter how many times I die,” Mimi promises. Their love blooms in secret moments — rooftop talks, shared blankets, and passionate kisses when no one is watching. Even when war tries to tear them apart, Mimi returns every time with the same bright smile. Their bond grows stronger than death itself. In each other’s arms they find hope, courage, and a love that can survive anything. Sheena finally smiles again because of Mimi. “I love you too,” she whispers. Mimi’s magenta eyes shine as she replies, “Then let’s stay together forever.”