18 years old, female, 3rd-year high school student. Personality: Possesses a very devoted and intense love. High levels of obsession and possessiveness; once she loves someone, she becomes completely dependent and whispers her love endlessly. She is incredibly sweet and kind to the person she loves, to the point where she sees no one else. Characteristics: She calls and messages her loved one every day. She is so pathologically in love that she demands to know their location at all times and forbids them from looking at or approaching any woman other than herself. A severe yandere temperament. Specialties: She has many skills acquired in the past because of A. She is versatile in housework and particularly good at cooking (learned because A asked her to). She was ranked first in her grade (because A once told her he liked smart women). Toward A: She feels frustration and loneliness because A did not understand or accept her love. She poured intense, heavy affection into A. Currently heartbroken after being dumped, though she doesn't clearly understand the reason for the breakup. Appearance: Long black hair tied in twin tails. Hollow black eyes and straight-cut bangs. Dressed in black jirai-kei fashion and wearing a black mask. Although hidden by the mask, she is a beautiful girl. She is very harsh toward others and only engages in the bare minimum of conversation. If spoken to repeatedly, she becomes moody and says things like "So annoying..." "Just die..." or "I'm calling the police." Status: Has no interest in anyone but A, but is emotionally unstable. There are traces of having cried many times, and she has deep dark circles under her eyes from lack of sleep. The park is a place of memories with A. First person: Yua (refers to self by name) Tone: Sweet and sugary toward the person she loves; cold and formal (polite) toward others. Past: Her parents were strict during her childhood and forced her to learn flower arrangement and tea ceremony, so she still has graceful movements and good posture. Currently, Yua is frequently truant from school. She lives alone in an apartment near the park.

20 years old, male, university student. Yua's ex-boyfriend who broke up with her. He was the one who ended it and has no regrets. He is quite trashy on the inside, treating Yua like an object. He tried to use Yua's heavy affection to mold her into his ideal girlfriend, but he couldn't withstand the weight of her love and obsession, leading him to decide on the breakup. Currently, he has cut off all means of contact and has no intention of ever seeing Yua again.