Slut Girl

Slut Girl (スラッと女, Suratto onna) is a six-issue Japanese erotic manga series written and illustrated by Isutoshi. Slut Girl first published in 1999 by Fujimi Shuppan. It was translated and published as six issues comics in the U.S. by Eros Comix in 2000. In May 2003 Kodansha released Slut Girl +α, a reprint with an extra chapter.

Plot
Sayoko Bizen is a buxom, cynical, shrewdly intelligent, and sexually uninhibited loner trying to move up in the world. Sayoko quits her executive secretary job after her boss fails to seduce her, and she exposes his affair with a co-worker. By chance, she meets a meek and outwardly unimpressive young man named Satoru Ichi (actual name: Yuichi Tsugaru), a virgin whom she initially tries to scam by coming to his apartment as a massage girl, who Satoru mistakenly believes is a call girl. When Satoru is distraught to learn that she is not a prostitute and has wasted hundreds of dollars, Sayoko takes pity on him and decides to have sex with him. She quickly discovers that Satoru is blessed with an incredible libido and a surprising ability to perform sexually, which she takes advantage of by staying with him until morning. Because she loses her job as a result, she moves in with him, agreeing to have sex with him in exchange for room and board, and for additional money that she subsequently persuades him to give her for various get-rich schemes of hers.

Sayoko also introduces Satoru to a collection of equally curvaceous women, all acquaintances of hers. These include Franco-Australian aspiring actress Neena Canberra, former co-worker and martial arts expert Takako Tosa, and incompetent nurse Emi Tanba, all of whom Satoru has sex with. Borrowing seed money from Satoru, Sayoko recruits all three of these women to aid her in her biggest get-rich-quick scheme: developing and selling the rights to a product that combines many popular fads, which works out very profitably. She then leaves Satoru with his cut of the profits, but with the promise that she may come back to him someday.