Soreyuke Marin-chan
Genres: Sci-Fi, Hentai
Type: OVA, Episodes: 3
Aired: Dec 14, 2001 to Mar 28, 2003
Studio: Studio G-1Neo
Source: Manga
Rating: Rx - Hentai
Synopsis:
This 3 part hentai bishoujo OVA series is about an evil doctor that tries to collect the sperm of 100 guys, and the woman, Marin, that tries to stop her evil sister from accomplishing this. Based on the hentai manga of the same name. 

"For the bright future of Japan, I shall take your semen!"