CLAMP has revealed that the xxxHOLiC manga has 14 million copies in circulation. According to reports, the series was serialized in Young Magazine and Bessatsu Shōnen Magazine from 2003 to 2011.
Synopsis:
Watanuki Kimihiro is a young student who has the gift of seeing and attracting ghosts and spirits (ayakashi). One day, while being attacked by an ayakashi, he ends up entering a shop. The owner of the place is Ichihara Yuuko, a woman who says that his entering there was no coincidence.
Furthermore, the work changed its name in 2009 to xxxHOLiC: Rō . Subsequently, the publication returned to Weekly Young Magazine in 2013 where it was released until 2017, the year it went on an indefinite hiatus. To date, it has a total of 23 volumes, guaranteeing a continuation.
Finally, xxxHOLIC received two anime adaptations produced by Production IG .