Hanazuki: Full of Treasures The series is set in a fictional galaxy comprising countless moons that are beset by an enigmatic black miasma that destroys everything in its path. These moons are protected by children called Moonflowers, who use their emotional states to activate magical "treasures" that are supplied by an infantile being named Little Dreamer; the treasures can then be planted to grow trees with the power to ward off the miasma.