So in part 1 older sister boyfriend fucked younger sister with older sister permission, this part younger sister brought home he new boyfriend and also allowed him to fuck older sister. I smells sister swinging if this ever continuous. lol
@H0R0: she didn't "allow" her. The imouto tried to piss her off as a revenge for the first part, knowing that the boyfriend dumped her, but the big sister has more than on trick in her bag lol and she gets back at her imouto by having a 3P.