The Clamp mangaka group is an all-female Japanese team that was established in the mid-1980s. It consists of leader Nanase Ohkawa and three artists whose roles change for each series: Mokona, Tsubaki Nekoi, and Satsuki Igarashi. As of October 2007, over 99 million copies of their tankōbon have been sold worldwide. Initially, the group was an eleven-member dōjinshi circle that started creating original work in 1987. By the time they debuted with RG Veda in 1989, they had reduced to seven members. In 1993, three more members left, leaving four who are still part of the group today. In 2006, the members decided to change their names; Ohkawa later changed hers back from Ageha Ohkawa to Nanase Ohkawa while the other three retained their new names.