The third exclusive work of the beautiful and cute older sister Rin Chihana is a chase piston work! Furthermore, to satisfy her bottomless sexual desire, 10 male actors are gathered and she challenges herself to a big orgy for the first time! Another male actor energetically pistons her sensitive pussy that has climaxed with a serious piston! Even Rin Chihana, who is expected to have a white flag as she has a series of climaxes, says "I've already come!" and "I'm satisfied, it's okay!!"! ? But the male actors continue to piston relentlessly... What will happen to her after she reaches the climax! ?