WNZ-399 Dear Brother, Kohaku Uta

I haven't seen my sister in a while, and she looks just like A●B48's Mae● Atsuko! Her looks are more grown up now, but her sweet personality is still the same as before. I'm going on a date with this cute little sister all day! While I think she's cute as she behaves innocently in the hotel room, I also feel her as a member of the opposite sex. And finally, the brother and sister...