Do like the older sister which is gal? The motion anime

Our Elderly Sister is Gal. Do not yet have a boyfriend. One day be asked for “the part of boyfriend” by Elderly Sister Would participate in a party, In the direction where the sky is dark halfway…… Indeed hear this for a rumor Be not guys called “yarikon?” Because “you are good, rub my chest in silence!” Then Elderly Sister begins to say the funny Koto of the head and―