CLAMP (クランプ, Kuranpu) is an all-female Japanese mangaka group which has earned the title of the “Queens of Shojo”. They have a very sadistic style which could be interpreted as manga for adult people, but also varying the themes of their series, from childish and comedic to dramatic, tragedy and teen-rated. They are known worldwide. They started as a doujinshi circle called Clamp Cluster in the mid 1980s; drawing doujinshis from 1987 to 1991.