Mao, who is the mother of the erotic cute serious girl JK Yui-chan and the aunt of the erotic cute Renha JK Shiori-chan, was fine until her doting younger brother, Yoshihiro, the store manager, got into trouble and forced her to have sex with him. However, Yoshihiro and his JK friends were taken aback by the sudden change... ``Yoshihiro, come on, I told you to stop, right?'' In a low voice, the words breathed out along with the cigarette smoke were the erotic and cute kindness that had been there before. She was different from Mao-san, the naughty mommy older sister... ``I-I'm sorry...I violated my sister...'' Yoshihiro, who had become a poor store manager who couldn't even look her in the eye, replied, ``That's true.'' ...not really good