Definitely. The Re:Zero anime originated from a web novel. The story and characters were first developed in the web novel format before being brought to the screen. Many of the key elements and plotlines were drawn from the original web novel.
The anime of Re:Zero often simplifies some complex plotlines from the web novel for the sake of time and easier understanding for a wider audience. For example, in the web novel, there are more in - depth descriptions of Subaru's internal monologues and his complex relationships with other characters which might be abridged in the anime.
It depends on personal preference. If you like a more visual and streamlined experience, the anime might be better for you. The animation brings the characters and the world to life in a vivid way.
Rem is also a character who has more development in the web novel. Her backstory is further explored, and her feelings towards Subaru and the world around her become more complex. She has a certain charm that draws readers in.
One of the key plot points is Subaru's continued struggle against various challenges in the new arcs. He has to face more powerful foes and complex situations, for example, dealing with new magical entities that pose a threat not only to him but also to the people he cares about.