Japanese title: せめて3日は履き続けろ! (Semete Mikka wa Hakitsudzukero!)
A doujin by Chihagura revolving around Eirin getting Kaguya to wear see-through panties.
Artist link: hachi_(chihagura)
Hard-translated: http://www.mediafire.com/?nzninlgy1nn
Raw: http://www.mediafire.com/?ytmjjtw44ym