I found this this book really good to read, but when you're in the interesting part it was locked you need to unlock by coins every chapter in order to read it.
disappointed few chapters were free, you'll need to pay for the succeeding chapters and it wasn't cheap. you can buy a cheaper book on Amazon for just around 2dollars.
the first I read in this comic app was a book the title of "my rich wife" but, I was stuck at chapter 16 due to lack of coins to unlock the next chapter. I hope the author will unlock all chapter.