Hai! Step Jun - S01

Jun is a very smart little girl who spends her time putting together all sorts of inventions. Eventually she builds two small robots, Kichinosuke and Yukinojo, who become her best friends. Because she is so intelligent, Jun starts college at a young age, and there she meets and falls in love with a boy in her class named Zero. Zero is interested in motorbikes, not school, and is used to skipping classes. He fell behind in his schooling, so he is much older than the other students and is mocked for it. Jun, on the other hand, is far too young and small to be in college, and she is made fun of too. Thanks to their shared passion for mechanics, Zero comes to sympathize with Jun and agrees to eat with her at Harbor, the restaurant where Jun's parents live. What follows is a long series of fun adventures and arguments as little Jun tries to win over her charming prince, who is twice her age.