Haruka works at a lingerie design company and is in charge of underwear development that "supports women who can become bold," but for Haruka, who has no experience with men, it is a challenge and struggles.Meanwhile, a male employee who gets an erect penis into Haruka's big butt panties gets in a huge penis and inserts her big dick into her... However, since that day, the project has progressed smoothly, and "I have to do something more dirty and understand the appeal of underwear."Haruka, who indulges in sex, is also co-developed with her body in the lewd column...
