a yankee sister with absolutely no sense of private fashion, who was invited on a date by a serious man, consulted me! when i advised her "you should wear something cute!"... what she brought back was a tight knit one-piece! i, who was aroused by the different atmosphere and her overly erotic body line, forgot myself and inserted my dick! i thought she would get angry when i pistoned violently and cummed inside her! ...but then, she asked for creampie herself and had consecutive orgasms!! the yankee sister unexpectedly becomes a tsundere erotic girl!