My sister's breasts have recently grown rapidly. Moreover, she often wears revealing outfits, so my gaze is drawn to her chest and I end up getting an erection... "Hey big brother, are you turned on by my breasts and got a boner?" When she says something like that, I can't even look at her face properly. Then she adds, "From today onwards, these two are your breasts." I obediently indulged and enjoyed the two breasts that now belonged to me.
