The Mai practicing hard for an Episode 1 "piano lesson piano contest of the shiver" orders a lecturer from a man called Mikami with some habits. However, the lesson of Mikami was eccentric…. Younger Sister, the Yui of the Episode 2 "Sisters bite Mai which came back to the parents' house after a long absence of the Kindan" worries about Mai with mother who has changed by Mikami, but oneself only gradually fits in into Mikami….
