A wizard with hair that shines like a nebula and eyes full of stars wanders through an endless life, possessing only a single, peculiar magic. He has the power to transform the brilliant radiance of life itself into precious jewels. Unable to change the course of events or save those he encounters, he is an eternal and powerless spectator to countless tragedies and comedies that unfold across the universe. It is always at the very moment when a life shines most brightly that the most beautiful gem is formed. Each of these gems contains a story, and the wizard serves as the narrator, recounting these tales to a young child named Boku in a room illuminated by starlight.

The narrative is structured as an anthology of short stories, with each volume collecting several self-contained tales set in unique and often cruel fantasy worlds. The first volume, for example, contains four stories. One story is set in a beautiful country where the inhabitants eat mermaid meat to halt aging, and a young girl named Luki begins to question the morality of her society after befriending a mermaid who was meant to be her meal. Another story follows an unlikely bond between a cook and a warrior, while a third takes place in a cruel world where life itself is used as currency. The second volume, subtitled The Nocturne of Shooting Stars, continues this pattern with four more stories, including the tale of the last vampire hiding in a human village and a dragon with forbidden rainbow scales who questions its existence.

The main characters are not recurring protagonists in a traditional sense, but rather the wizard Magica and the child Boku, who acts as the audience surrogate. The wizard is a gentle yet melancholic figure whose immortality forces him to witness the fleeting, beautiful, and often tragic moments of mortal lives. The true protagonists are the characters within each short story, who are often outcasts, monsters, or individuals living on the fringes of their societies. They form deep, meaningful bonds with each other that are tested by the harsh realities of their worlds, which include themes of exploitation, war, fear of the unknown, and the consequences of humanitys cruelty.

The manga weaves together beauty and brutality, creating a reading experience that is both poetic and unsettling. It explores profound themes such as the nature of life, the pain of existence, and the strength found in love and friendship, often contrasting these warm emotions with cold-blooded violence and tragic endings. While some stories end in sorrow and loss, others offer glimmers of hope, but all are united by a focus on intense, heartfelt relationships that defy societal norms, such as between a monstrous girl and a vampire, or a young painter and a mythical dragon. The series is presented as a collection of these fantastical fairy tales, each one a touching and stunning gem polished by the magicians timeless gaze.