Haruka works at a lingerie design company and becomes responsible for developing underwear that supports bold women, but it is a difficult task for Haruka, who has no experience with men. In such circumstances, a male employee who has an erection in Haruka's big ass panties inserts his big dick into her... However, since then, the project has progressed smoothly, and Haruka, who thinks she needs to do more lewd things to understand the charm of underwear, also develops her lewd body together...
DEEP'S
