A busty girlfriend who has a crush on her boyfriend falls into NTR (Netorare, a form of sexual assault). Her fiancée seems to be having her breasts played with by a handsome gym instructor… Washio Mei SONE-453

With her wedding approaching, Mei started paying attention to her physique and began going to the gym. During intensive one-on-one training, Mei gradually developed trust in her trainer, only to be unexpectedly assaulted. She was extremely disgusted by the trainer's unusual sexual fetishes, but her body quickly adapted, succumbing to pleasure. The trainer's powerful thrusts became a habit, and she began to crave them again…