As the anal plug was inserted to its deepest point, Yi Ren started feeling uncomfortable. She couldn't help but tighten her sphincter muscles, causing her anus to contract slowly. However, she discovered that the foreign object inside her rectum was somewhat slippery, as if it could be squeezed out at any moment by the contracting anus.
Unable to endure the discomfort, Yi Ren had to lie down and make an effort to force herself to relax her muscles. However, the sensation of having a rigid object inside her intestines was unmistakable and extremely uncomfortable. Her body instinctively tried to expel the foreign object.
"Master... you're really good at tormenting people~" Yi Ren couldn't help but lament in her heart. In just a short period, she was already sweating profusely, engaged in a fierce battle against her body's instincts. The struggle was making her extremely uncomfortable.