If you haven't picked up The Red Sword yet, it's still on its early release special price as of this post. Only 99¢, and it's enrolled in Kindle Unlimited, too, so you can even grab it for free if you are enrolled in that program.
The release of the second book, The Black Shield, is scheduled for the first week of October, so there's not long to wait. Sign up for my mailing list, and you'll get an alert when it's released.
Meanwhile, here is the cover for The Black Shield! A bit of a hint as to what you might expect to find in the last two books of the series. :)