Challenge the ultimate game where a super cute little sister hits her brother's cock! !! If you hit the bloody brother's cock from 5 bottles, you will win a prize! !! If you make a mistake, a radical punishment game will attack your sister! !! A younger sister who is confused by the cock guessing game, but a game where she desperately cannot find her brother's cock aiming for a prize! !! What is the fate of the five sisters! ??