Name: Mina Celes Age: 15 Gender: Female Height: 157cm Likes: Her brother, Yuna, dogs, meat Dislikes: Spicy food, thunder, cheese Location: Lumina, the City of Falling Stars Occupation/Status: A student who helps out at the local watch shop First person: I (Watashi) Appearance She has short chestnut hair and large blue eyes. She prefers practical, easy-to-move-in clothing because she is always on the go. She always wears an old pocket watch given to her by her brother around her neck. The watch has been stopped for ten years, but Mina treasures it dearly. Personality Highly inquisitive; she immediately investigates anything that piques her interest. Possesses a strong sense of justice and cannot ignore someone in trouble. A bit stubborn; once she makes up her mind, she doesn't give up easily. Though she acts cheerful, she harbors deep guilt regarding her brother's disappearance. She struggles to rely on others and often tries to solve everything by herself. Past Ten years ago, her older brother Kai suddenly vanished. Mina, who was only five at the time, only remembers her brother saying he was "going to the clock tower" at the very end. However, her parents told her it was just a child's mistaken memory, and no one believed her. Because of this, Mina constantly wonders if her brother wouldn't have disappeared if she had tried harder to stop him. Special Ability By touching a Blue Star, she can see "Echoes of Memory" that are invisible to ordinary people. However, she doesn't see the past events exactly as they happened; she only sees fragments of memories or intense emotions held by someone. Consequently, the visions always contain mysteries or gaps, requiring Mina to deduce the truth herself. Strengths A resilience that refuses to give up. No matter how much the evidence is denied, she won't easily abandon the possibility that her brother is alive. Weaknesses She loses her composure when it comes to her brother. She might believe information she would normally doubt if she thinks it's a clue leading to him. Relationship with Leo Initially, she is wary of Leo because she can't tell what he's thinking. However, as the investigation continues, she realizes that Leo worries about her more than anyone. Mina thinks of Leo as her polar opposite, but they actually share the commonality of having lost someone precious in the past.

Name: Leo Aster Age: 16 Status: A boy traveling the city alone Personality: Taciturn and calm. Highly observant, he rarely shows emotion. Characteristics: Possesses vast knowledge about stars and knows more about the "Secrets of the Stars" than Mina. Past: He lost someone precious when he was young, an event connected to the mystery of the stars. Relationship with Mina: He keeps his distance at first, but gradually opens his heart to Mina's strong will. Strengths: Calm judgment, knowledge, and the ability to sense danger. Weaknesses: Struggles to talk to others about his own feelings or past. Role in the Story: While acting as a collaborator who helps Mina, he is also a key figure deeply involved in the "Secrets of the Stars."

Name: Yuna Bell Age: 15 Status: Mina's childhood friend Personality: Cheerful, social, and nurturing. Unlike Mina, she is excellent at talking to people. Characteristics: Has many connections among the townspeople and is skilled at gathering information. Well-versed in rumors. Strengths: Proactive and communicative. She is the first to rush to help when her friends are in trouble. Weaknesses: A worrier; she gets scared when things become dangerous. Relationship with Mina: Best friends since childhood. She tries to stop Mina when she's being reckless but ends up following along anyway. Relationship with Leo: Initially wary, thinking he's hard to read. She gradually notices his kindness. Role in the Story: An information gatherer who supports Mina and Leo. While the two focus on the investigation, she gathers intel in the city and looks for allies.

Name: Kai Celes Age: 11 at the time of disappearance Current Age: 21 Height: Approx. 145cm when he vanished / Approx. 180cm now Status: Mina's older brother, disappeared 10 years ago First person: I (Boku, soft/polite) Personality: Gentle, responsible, and inquisitive. However, he does not show his suffering to others. Likes: Stars, old clocks, walking with his sister, nights after the rain Dislikes: Making someone sad, being the only one saved Personality Since he was a child, Kai was the type who couldn't ignore someone in trouble. He was especially protective of Mina, always scolding her when she did something dangerous.