Hybrid Child, developed by the talented artisan Kuroda, are artificial beings that are neither robots nor dolls but rather a reflection of the love that has been provided to them. They are not actual humans and need love to develop, even though they have their own mind and the ability to experience human emotions. When Kotarou Izumi brings an abandoned Hybrid Child he found in the trash into his family's home, it is frowned upon because he is the young heir to the illustrious Izumi family. When he is not paying attention, his family even makes several attempts to throw away Hazuki, Kotarou's name for the Hybrid Child. But when they overcome these challenges, their love and their connection become stronger. However, ten years go by before they realize the horrible truth: a Hybrid