The manga isn't drawn very modern but I somehow loved it. In the anime the graphics are modern and characters don't look the same as in the manga. I barely recognised the main character. The reason that I recognised this anime was because of parasytes. Despite the fact that graphics changed, they are still good! The changes of the body are amazing. Changing the shape of the body is certainly difficult to animate as a human form changes to something really bizarre. Also - finally no censoring. I hope to see the dramatic scenes in anime version and I look up to the gore. Additionally, the opening is amazing with some metal parts of the song. It suits the anime so much!! The music is well chosen.
In my point of view, I think that anime normally follows the manga, however ther are some changes for example modern technology such as tablets. In 1995 and below nothing like this existed therefore they changed a bit for the anime to be base on our modern life. Anyhow, after watching the first episode, I'm glad to say; you have to watch it!