Kimihiro Watanuki is haunted by spirits - and the only way for him to escape his curse is to become the indentured servant of the mysterious witch Yuko Ichihara. But when Kimihiro's beloved, beautiful Himawari-chan, asks him for a favour, he and his eternal rival, the exorcist Domeki, must go on a spirit-busting adventure without Yuko there to save them! Meanwhile, Yuko gives a young woman a precious cylindrical box from her treasure room. There's just one caveat: she must never open it. Inside is a magical device with a terrifying reputation! Can Kimihiro save an ambitious young lady from her own overconfidence? "xxxHOLiC" crosses over with Clamp's other hit series, "Tsubasa: RESERVoir CHRoNiCLE"!