Hai! Step Jun

Jun is a bright young girl who spends her days tinkering with inventions. Her latest creations are two small robots, Kichinosuke and Yukinojo, who quickly become her closest companions. Due to her exceptional intelligence, she enrolls in college at an unusually young age, where she meets and develops feelings for a classmate named Zero. Zero, who is more interested in motorcycles than school, often skips classes. He’s older than the other students after falling behind in his studies, which makes him a target for ridicule. Jun, meanwhile, faces teasing for being far too young and small for college life. Bonding over their shared love of mechanics, Zero warms up to Jun and accepts her invitation to dine at Harbor, the restaurant where her parents live. What follows is a long series of amusing misadventures and playful arguments as Jun, despite their age difference, tries to win over her reluctant prince.