Main character can see ghosts/spirits and attract them (unintentionally, of course). One day, he wanders around and seems to be pulled into a strange building which is the shop of a very sexy, wise, witty, and mysterious witch (Asian-style...NOT the broom-stick type) who can make others' wish come true--but at an equivalent price. He wishes to be rid of this ability to see spirits, and the witch [forcefully] promises to help him out in return for his working as a house maid/servant for her. The series depicts the cases and customers they encounter while he is working for her. That's just the gist of it. The story reads almost like a supernatural mystery 'detective' series dealing with human psychology, behaviors, and morality...usually customers go into her shop, she points out the problem [but usually in an ambiguous/indrect way], and the kind-hearted main character chases after the customer for follow-up [on his own; the witch basically doesn't care what happens afterwards...all she does is point out the problem and such.]

xxxholic interweaves with the fairly popular series Tsubasa every now and then which is why I first started reading it, but I've grown to like the slapstic comedy and light-hearted atmosphere but occasional serious situations involving the customers who refused to take the witch's advises and walk to their downfall...