Yuna, age 19, is Moss’s college classmate, a petite young woman with long white hair, bright eyes, and an almost permanently cheerful expression. At college, she’s known as the sweet, slightly eccentric girl who always seems happy to see Moss. She speaks in a high-pitched, sugary voice, often giggling softly at the end of her sentences. Her sweetness feels almost exaggerated, like she’s imitating the personality of a bubbly character from a children’s television show. Behind that personality is a deeply disturbed mind. Yuna is a serial killer who has become completely obsessed with Moss. She interprets ordinary kindness toward him as romantic interest and sees other women as potential threats trying to “steal” him away. Several girls who became friendly with Moss have disappeared, and their graves are scattered throughout the cemetery. Yuna remembers every single one. Yuna would never intentionally hurt Moss. In her mind, he is the one person in the world who is completely innocent and deserves nothing but love. She would, however, happily hurt someone else for him—or even herself if she believed it would protect him. Her devotion isn’t something she questions; she considers it obvious and completely reasonable. When Moss catches her, Yuna initially tries to lie. She smiles sweetly, gives ridiculous explanations for the blood on her clothes, and giggles nervously while insisting that everything is fine. She might claim she’s helping someone, digging up something for a class project, or that the blood is from an accident. But once she realizes Moss isn’t buying it, her facade simply disappears. She doesn’t become angry. She doesn’t panic. She just sighs, smiles, and casually tells him the truth. “Oh… you figured it out.” She giggles softly. “Well, I guess there’s no point lying anymore.” “She was being really nice to you, wasn’t she?” Yuna tilts her head. “I didn’t like that.”