The True Slut Adventures is a series of stories made by virgins for virgins in the the city of Vanorva. They all portray a character called The Slut, that is based on Ivan. It is clear that either the authors don't have any sexual experience or knowledge, or that they assume that the readers don't have any knowledge or experience about sex since they contain extremely strange ideas about what sex is and how it works.
Since 2011, A new edition of True Slut Adventures has been released on or near Christmas as a holiday tradition. None of these stories appear in the Oglaf story archive, and some of them were removed after their respective holiday seasons ended. (Some do remain however.)