Nano is late for school, because an accident along the way causes her to fall apart. Yuko tries to impress everyone with a unique greeting.; Yuko and Mai struggle against their own fears to construct a house of cards.; After Yuko borrows Mio's notes, Mio remembers the lewd doodles of Kojira that she drew on them. And Mio will do anything to get the notes back before anyone else sees them.; The school principal addresses the students, welcoming them to another term.; Yuko witnesses Principal Shinonome wrestle a deer behind the school.; Yuko desperately tries to rescue her prized carved sausage before it hits the floor.; Yuko finally does her homework for once, then accidentally leaves it at home.; Yuko thinks she's insulted Mai.; Since everyone in the school knows Nano is an android trying to pass as a human, Yuko decides to test her abilities.; Nano tries to convince her creator, Professor Shinonome, an immature eight-year-old genius, to remove the giant wind-up key from her back so she can more effectively pass as a human.; Kojiro and Misato are assigned the task of coming up with a theme for the Cultural Festival and Misato objects to all of Kojiro's outlandish suggestions, violently.; Mai plays mind games with Yuko.; Yuko fakes an illness to get out of school, then realizes that she has a big test the day she's slated to return to school.; Yuko tries to fake her way through the test.; Nano discovers that the Professor has installed secret compartments in her android body to store snacks.; Yoshino cons Mio into acting as a human billboard advertising a local food stand.; Nano tries to convince the Professor to remove the key in her back, if she can keep the Professor's attention.; Miss Sakurai tries to discipline Kojiro for eating in the halls.; Yuko keeps getting hit with Nano's flying parts.; Forced to stand in the hall as punishment, Yuko receives condolences from a stray dog.