Episode Title:
Sisters Attack!.
Episode Description:
In early summer, Kao's younger sister Kasumi comes to the club room to play. Mao, who thinks Kasumi is younger, spends her time as Ma-chan. In addition, they are going to go to the pool in every part of GJ part because a hot day continues. It comes to Kasumi and his friends. The name of Kasumi's friend seems to have been heard somewhere.
