First Attempt at 3-Part Masturbation Struggle File: "Please Use My Vagina for Testing in Order to Develop Better Masturbation Products" - Shy but Extremely Perverted Toy Division, 2nd Year with the Company, Shibasaki Haru, SDJS-193

After appearing in AV, Haru Shibasaki worked hard to develop new products and dedicated herself to them. This time, she's finalizing the design of a new masturbation sleeve. She's trying three different sexual experiences for the first time! 1. "First Time Using Lubricant": Researching lubricants for masturbation sleeves. 2. "Close-up Masturbation and Oral Sex": Exploring the sensitivity and shape of a penis. 3. "First Sexual Intercourse with an Amateur Man": Comparing the prototype masturbation sleeve with female genitalia. 4. "First Threesome Sex": Going to the filming location and testing how many thrusts it takes to ejaculate.