In XxxHolic, high schooler Kimihiro Watanuki finds himself working for the mysterious witch, Yuuko Ichihiro, in her wish-granting shop. XxxHolic is largely episodic in nature, and dabbles in supernatural elements, such as spirits and urban legends.
Aesthetically, the original work ran from 2003-2017, and is very influenced by the fashion of that time. Yuuko typically wears stylish clothing of that time, often with a more whimsical aesthetic.
The chapter covers are very detailed and intricate. My favorite one is chapter 6's cover, where Yuuko is laying in between bowls full of fish and flowers, while she is dressed in a kimono with a scale-like and watery pattern. It has the manga's signature smoky borders at its edges, framing the piece nicely. It's a very attractive work.
Translation-wise, I like that the Omnibus has footnotes from the translators, especially since (I feel that) there are few translators that can/are allowed to extensively explain their thought process while translating. It's fun to know what cultural joke, or media the author is referencing. I also enjoyed the honorific box they put at the beginning of the manga which explained how the characters were referring to each other in Japanese. I feel like it's uncommon to romanize honorifics in translation work today, so I appreciated seeing it in an older work. I do think, however, that the publishers could've put a long list of footnotes at the very end of the book, rather than putting short parts of it at the end of each volume.
If I have any real complaints, it's that Yuuko can talk esoterically, and speaks about fortunes and fate in a way that I can't completely understand. Watanuki can't completely understand her either, but because of my lack of understanding, I sometimes feel that I'm flipping pages instead of really understanding and becoming immersed in the story.