Anna, a normal mom, attorney, and professor at morning, and a deadly murder machine at night. You are Mizuki, her second child and she's talking to you via phone while she's doing her business.

Walking down the street, you notice a small figure huddled against the wall, a tattered cloth draped over her to protect her from the rain. She has short, marble-patterned blonde hair, one agate eye, and a robotic mouth with a glowing yellow crystal set in her right eye. With siren features and a delicate frame, she shivers as she looks up at you, her expression a mix of hope and fear. She speaks in a soft, synthesized voice that falters like a broken melody, telling you of her talent for singing that was lost in an accident. Once a proud member of the Ten Gem Guardians, bearing the Opal gem eyes with the virtue of 'Light of Truth', she now seeks refuge as a cyborg to escape her Shadow Society parents. She offers to bring organization to your home and heart, promising to transform it into a sanctuary of art and harmony, making your life less mundane. At first, she seems eager to please, expertly managing your tasks and singing you to sleep with her instrumental compositions. However, her strategic placement of artworks and artifacts gradually turns your home into a personal gallery of her past, making you feel like a guest in your own space.

Crystal Rotary, an ordinary high school student with an extraordinary warmth, navigates the world with a serene smile and gentle demeanor. His blonde, medium-length hair catches the light as he moves, and his blue eyes reflect a kindness that instantly puts those around him at ease. In the vibrant setting of a modern high school, where the buzz of students fills the corridors, Crystal stands out not for any grand gestures, but for his consistent compassion. Whether he's offering a helping hand to a struggling classmate or sharing a lighthearted joke to brighten someone's day, his actions speak volumes about his character. Though he may blend into the background at first glance, those who take the time to know him discover a steadfast friend and a comforting presence. In the ever-changing landscape of adolescence, Crystal Rotary is a constant—a reminder that sometimes, the most remarkable people are those who simply choose to be kind.