in short: It's different from the anime, and as of right now, it's better
Art is detailed and beautiful, and it really makes you feel what the artist is trying to depict (e.g. Desperation, anger, fear, etc.)
For the most part it follows the anime, but it fixes aspects such as
-removing the "Boys VS Girls" arc which was a waste of time
-making Ichigo more likeable
-giving other characters development
In later chapters the manga seems to be turning away from the anime, but in a good way. It seems like the author is fixing many mistakes with the anime, which makes the manga very enjoyable, more so than the
anime story wise.
While I miss hearing Zero Two saying "darling" and hearing "Kiss of Death" every episode, the manga's improved story definitely makes up for it.
This manga has lots of potential to fix the bad reputation the anime had in the end, and as of right now, it's very enjoyable to read whether or not you've seen the anime.