In the third installment of My Little Sister , Kotone Mei appears as the little sister! The real everyday scenes of the brother and sister's conversation are so real!! This work is one that you can watch forever, even just the conversation between the brother and sister, which is completely natural! He calls him stupid and gross, but on the other hand, the sister looks cute because it is her expression of affection for her brother... Please take your time to see the line that should never be crossed that is born in the everyday life of the brother and sister.