In order to uncover the truth behind her husband's regular trips disguised as business trips, Yumiko decides to attend the doujin event in a provocative cosplay outfit. However, unbeknownst to her, a vibrator has been secretly concealed within her attire. With her husband completely oblivious to her cosplay, he captures an intimate angle on camera while the trembling vibrator brings her to the brink of climax! As if that weren't enough, her husband unknowingly enters the men's restroom where Yumiko and Kazuya are engaged in a forbidden encounter. The impending discovery heightens the forbidden pleasure of this NTR (Netorare) escapade, leaving Yumiko with no choice but to succumb to her desires!