Thank you for making this available for us! I added it to my Follow list.
If you really want to take it up one level, then I would suggest that you use a spell checker. I will read it regardless but I am pointing this out because you asked for suggestions. I am not speaking English natively so there might be more mistakes but I noticed that on the title screen you wrote "misterios" instead of "mysterious" and "Autor" in the title for this chapter should be spelled as "Author".