Invented by Shina Sora! A human block lock specially for M men! ! Without using any restraining devices, Shina Sora's body is all that's needed to restrain the man's hands and feet, and she pistons him ferociously in a cowgirl position while he can't move! First, in a cowgirl position, she steps on his arms with both feet! She kisses him with her mouth! Her pussy holds his dick raw and fixes it in place! She blocks the man firmly so he can't move! She keeps pistoning him even after he ejaculates in a cowgirl position, inducing a male squirt! She uses her new special move to make the men who have become her dick slaves weak to the bone!