Yes. You will see the smae characters again in the stories.
For example in the book you will see: Pat and Mat in the Short Vowel A stories, Rex in the Short Vowel E stories, Jim in the Short Vowel I stories, Bob in the Short Vowel O stories, Mug in the Short Vowel U stories, Kate in the Long Vowel A stories, Glee in the Long Vowel E stories, Guy and Dice in the Long Vowel I stories, Moat in the Long Vowel O Stories, and Luke in the Long Vowel U stories.