Invented by Sora Shiina! - Solidified human block for masochistic men! - ! - Sora Shiina's limbs are restrained only by her body without any fixing devices, and she is furiously pistoned in the cowgirl position while unable to move! - First, step on her arm with both feet in cowgirl position! - Kiss your mouth! - The cock is fixed raw in the pussy! - ! - Block firmly so that the man cannot move! - Even if he ejaculates, the piston does not stop in pursuit cowgirl position, inducing the man's ejaculation! - ! - The men who have turned into cock-sluts will be stripped to the bone with a new special move! - !