Reiko is selected as a section manager at an underwear manufacturer and develops new products through trial and error. The great thing about the panties she designed was that they enlarged the pubic area from the mons pubis, making the bulge of the pubic area even with clothes on, making it even sexier. After its release, these panties received an unexpected response...
| Actor | Role |
|---|---|
| SSachi AkagiReiko Sakai | Reiko Sakai |
| HHaruka ShibataYuki Muraki | Yuki Muraki |
 Kazu ItsukiKozo Shimura | Kozo Shimura |
| MMizue KazamaMisa Shimura | Misa Shimura |
| KKiyoko YamamotoSaburo Yoshida | Saburo Yoshida |