Painful but relaxing

The sensation spreading through her body from Li FuJin's rhythm made YuYan unconsciously respond. Her hips were moving, following his movements like she wanted more. 

YuYan's unanticipated actions made Li FuJin's desire explode from his body. His gentle motion continued, but he moved faster and deeper, making her scream in pleasure. 

Her sweet voice kept ringing on his ears, Li FuJin held her waist as he went harder. Watching all her expressions made his eyes burning, full of desire for more. 

Accompanied by the pleasure from their movements, a strong oppressive power began to spread on Li FuJin's body. His flesh was like being teared but it did not bother him from the sensation of having her. 

YuYan continued to scream in pleasure, but the warm energy continued to cover her mind. There were sudden lines on her head like cracking her brain.