Episode 0

Mio Naganohara tries to comfort her friend Yuuko Aioi when she gets a 1% score on a test. Meanwhile, robotic girl Nano Shinonome tries to give little Hakase, who has a cold, some medicine, which she refuses to eat, and tries to get advice from their talking cat, Sakamoto. Later, Yuuko, Mio and their friend Mai Minakami go on a train ride, which is completely empty at this time of the day.