Grind, a Graphic Novel by Roberto Santiago Rosado is available for free download. Just go to this link:
https://www.smashwords.com/books/view/289628

Or search for Grind on Apple's iBook Store, Barnes & Noble or Diesel Bookstore. Here's a brief description;
In a time when honorable warriors found pride in protecting those in need, a new breed of powerful contractors were terrorizing peaceful people. Jirou thought he had lost it all, and so did Mika. When they met, it was just natural that they found shelter in each other's company. Now they have to work together and grind through the unthinkable in order to uncover Jirou's past and save his life.
Enjoy and thanks for reading!