My father remarried and brought home a new stepsister—a slutty, man-hungry gyaru who immediately tries to establish an intimate relationship with me. She starts touching my cock right away, showing zero sexual restraint. When I wake up in the morning, she's already sucking it. Her actions make it clear what she wants. "You've got a nice cock—why are you running away?" she says, constantly demanding creampie after creampie. No matter how much I try to escape, she keeps chasing me down with relentless lust, making me worry that if this goes on, my cock won't be able to keep up.