Ryunosuke and his father are running away from his crazy mother when, feeling the urge to answer nature's call, Ryunosuke finds a cute little alley cat and decides to keep it. Almost immediately after, they are caught in a fire fight with his mother's lackeys. Tragically the poor cat dies and Ryunouske is heartbroken, but luckily his inventor father just happened to bring along a deactivated robot. By placing the cat's brain in the robot, Nuku Nuku is born! Now all they have to do is teach Nuku Nuku how to behave like a normal girl instead of a super-strong, cat-brained robot, while trying to avoid a mother's wrath!
On a day like any other day, Cacao (a chocolate-loving student of magic) awoke to find himself next to a mysterious girl ... made of wood?! Named Hinano, the green-haired beauty wasted no time in professing her very one-sided love to Cacao, much to his dismay. Now, in this colorful world of magic and technology, Hinano must do everything in her power to to win Cacao's love, even when hindered by a variety of obstacles including martial arts twins, bizarre teachers, and suitors after her own heart!