Use or Hoopla . Connect your library card. Search for "Rogues anthology." You can borrow the EPUB version and export it to your phone as a "portable read" for 14-21 days. This is the closest you can get to a free, legal "12 portable" solution.
"The Rogue Prince" is a novella set in the world of Westeros, 300 years before the events of A Game of Thrones. The story revolves around the life of Prince Dorian Martell, the son of Prince Maekar Martell, and his journey to claim the Iron Throne. As a member of House Martell, Dorian is known for his cunning and ambition, earning him the nickname "The Rogue Prince". george rr martin the rogue prince pdf 12 portable