@tanilen: I was glancing through your write up of the Sexcraft Ninja again and found myself frowing a bit at the entry for 'Special' which seemed to be describing an advantage for a character rather than a prerequisite for a prestige class. After thinking for a bit I came up with the following feat which could replace that entry and be added to the feats needed for the Sexcraft Ninja.
Oh, and don't you mean 'Improved Unarmed Strike' not 'unarmed strike'?
Sex Craft Initiate [General]
You have been trained to have a basic knowledge of Sexcraft and the Shikima.
Prerequisite: Raised by or initiated into a sexcraft practicing group.
Benefit: Knowledge(shikima) is always concidered a class skill for you and you may purchase ranks in Sexcraft as though it were not an Exclusive skill.
Normal: Normally exclusive skills may never be purchased cross-class, but may only be taken by those who have them as a class skill.
Oh, and don't you mean 'Improved Unarmed Strike' not 'unarmed strike'?
Sex Craft Initiate [General]
You have been trained to have a basic knowledge of Sexcraft and the Shikima.
Prerequisite: Raised by or initiated into a sexcraft practicing group.
Benefit: Knowledge(shikima) is always concidered a class skill for you and you may purchase ranks in Sexcraft as though it were not an Exclusive skill.
Normal: Normally exclusive skills may never be purchased cross-class, but may only be taken by those who have them as a class skill.