Exactly what I was looking for! Buen trabajo Ryan!
I was inspired by my wife's Guatemalan folklore to write a Latinx fantasy, thinking the world of literature needed something fresh and unique. So how crazy to finally stumble upon Charlie Hernandez and Ryan Calejo's work (Big Data probably caught up to me and my search tendencies). But enough about that, and more about the League of Shadows...
From the cover to the back-of-book-blurb, this hooked me right away, and turned out to be exactly what I was hoping for. Ryan is for Latin American Mythology like Rick Riordan is for the better known Roman, Greek and Egyptian tales. He brings each to life, and even has some fun with them. The story flows well, makes you feel for the characters, and nails the middle school vibe (but not overly so). I do not want to spoil the story by saying too much, so will stop here. However, seeing he just published a second one, I can honestly say that I am looking forward to where he goes next, now that all the backstory is done.