Shibasaki Haru, who aims to take on new product development by participating in AV, is working on the final adjustments for a new onahole product that has been in progress since the last time. This time, she experiences all three types of sex for the first time in her life: 1. "First-time Lotion Sex" - Research on onahole lotion resulting in a slippery body. 2. "Close-range Handjob & Fellatio" - Investigating the sensitivity and shape of the penis. 3. "First-time Sex with an Amateur Male" - Comparing the fit of the prototype onahole with a real vagina. 4. "First-time 3P Sex" - Visiting the filming location to investigate how many thrusts it takes to ejaculate.
