Air Doll

Kûki ningyô is a movie starring Doona Bae, Arata Iura, and Itsuji Itao. A life-size blow-up doll develops a soul and falls in love with a video store clerk.
A life-size, inflatable sex doll suddenly comes to life one day. Without her owner knowing, she goes for a walk around town and falls in love with Junichi. She starts to date Junichi and gets a job at the same store where he works. Everything seems to be going perfectly for her until something unexpected happens.