original soruce : http://www.dlsite.com/maniax/work/=/product_id/RJ217835.html author's Pixiv : https://www.pixiv.net/member.php?id=1305905 Please purchase on DLSite to support the author if you enjoyed this doujin.
@Fills The girl was captured and her partner sold her out. She seeked revenge on her partner, describing what she experienced. The bulk of this doujinshi is how the girl was experimented upon for a year. At the end, the girl was released and offered some potion that could reverse experiment's effect on her. She refused, adding that she would like to meet the one speaking to her through the speaker because she liked her. The head of the firm asked the "scientist" why the girl was not kept longer given her tolerance. The "scientist", presumably the girl from last doujinshi of the series, said she wanted to get back to the plays.