Hatsu

Hatsuinu is a Japanese manga written and illustrated by Inu about a series of short hentai stories but "The Strange Kind of Woman" story continues throughout the three volumes. Issuisya has released the 22 chapters of the manga into three bound volumes between April 22, 2006, and July 11, 2008. The manga was adapted into two original video animation series, named Hatsuinu The Animation and Hatsuinu 2 The Animation - Strange Kind of Womans ~again~, respectively.

Excerpt from Wikipedia: Hatsuinu. Content available under CC-BY-SA 4.0.