Kaede's ordinary life takes an unexpected turn when she and her fairy companion Milmo encounter Tacos, a peculiar octopus-shaped robot with an impossible request. He's been searching across both human and fairy worlds for seven scattered crystals, and he's convinced that collecting them all will grant any wish imaginable. Skeptical but charmed by his determination, Kaede and Milmo agree to help him search. In exchange, Tacos gifts them a special fairy call crystal, an artifact that can detect the other crystals and unlock powerful magic when their forces combine. What begins as a simple treasure hunt quickly spirals into something far more complicated. Each crystal they discover brings new challenges, unexpected allies, and hints that Tacos's true motivations might not be what he first claimed. As Kaede balances her normal school life with her secret magical adventures, she finds herself caught between worlds, unsure who to trust and what the crystals really mean. The mystery deepens with every discovery, blending action, humor, and genuine emotional stakes that keep raising the question of whether wishes always come with a cost.