If you liked the xxxHolic manga, the Anime-Planet community thinks you'd like:
Subaru Sumeragi is a very compassionate, gentle and kind sixteen-year-old who lives with his twin sister Hokuto - but Subaru isn't your average teenager. He's an Onmyouji (spiritual medium) and the 13th head of the Sumeragi clan! Aided by Hokuto and their friend, the kind but mysterious veterinarian Seishirou, it is Subaru's job to calm the spirits and ghosts that haunt the urban decay of Tokyo. But as the incidents escalate, will Subaru's kind heart be able to cope with the darkness that threatens to rip the world apart at the seams?
Another episodic CLAMP manga that blends supernatural themes with an urban setting. Both are a bit moody, have easily-shipped male leads, and balance lots of dark/depressing stories with a sprinkling of silly humor. Additionally, the types of morals in each are often extremely similar.
High in the sky is the Yume Kira Dream Shoppe, a magical place where any dream can be granted in exchange for something dear to you. Rin, the shop's owner, and his plush rabbit assistant Alpha sign contracts with those in need, from a beautiful tree to a girl unable to confess to her secret love. Using rare and powerful items, Rin and Alpha will help bring joy to many lives.
The easiest way to describe Yume Kira Dream Shoppe is to call it xxxHolic for children. There's another wish granting shop and supernatural situations, but it's much lighter. Still, if you'd like a break from the heavy plot in xxxHolic or you wished Yume Kira was more grown up, the other one should suit you just fine.