Partaking in hobbies is a customary method for socializing, however, little did Kakeru Daichi know that his peculiar fascination with collecting rare juice cans would result in crossing paths with a captivating girl who he initially mistook for a beverage. Giving her the moniker "Melon" due to the contents of her melon soda can, Kakeru learns that she is an Akikan - a stunning female can created for a peculiar research project to determine whether steel or aluminum is the superior container material. Amidst being entangled in this twisted experiment, Melon adds to Kakeru's dilemma as she requires carbon dioxide to function and is now reliant on him. To further complicate things, Kakeru's affluent childhood friend Najimi also acquires an aluminum Akikan, creating an uproarious situation.