If you are interested in the sequel of Inuyasha, I would honestly suggest reading the manga instead. I love the characters designs of the anime as they heal the longing of wanting to see the original Inuyasha crew once again, but Yashahime's story was written before given proper direction of how this adaptation was going to proceed.
I would strongly recommend the manga because it goes more into explaining what happened to all of the original characters, how Towa encountered Moroha and Setsuna, and better goes in depth of what happened with Kagome, Rin, Inuyasha, and Sesshomaru and how they were separated from their children.
