WARNING: This story contains sexual contents. Info in chapter 1 Characters in ch.2 First sexual act ch.5 (Number, 3,) Number: A group of assassins hired by the association and ranked by numbers with 1 being the stories. Most members call each other by their ranks. This is a doujinshi (a fan made story) based of the original manga -number- no pictures or artworks belong to the author.
13 parts