xxxHolic volume 7 by CLAMP
KimihIro Watanuki has a wish put away with Yuko Ishikawa, the sultry time-space witch who can grant anyone's deepest desire . . . for a price! Still, working like a slave in Yuko's shop hasn't dampened Kimihiro's enthusiasm for his cute classmate Himawari-chan, nor his irritation with his too-cool rival Domeki, the guy who always seems to be around during Kimihiro's most embarrassing moments.
But when Domeki, trying to be a good samaritan, inadvertently becomes the object of a terrible grudge, Kimihiro seeks Yuko's help. However, the cost for her assistance is steep: Kimihiro would be permanently impaired! Is such a sacrifice worth it for someone he would rather have disappear?