Robert Heinleins Citizen of the Galaxy (2015)

"Just outside our galaxy the atrocities of slavery thrive, and young Thorby is just another orphaned boy sold at auction. But when he crosses paths with a mysterious crippled beggar, his destiny is forever changed. Citizen of the Galaxy is an interstellar action/adventure coming of age tale by the 'Dean of Science Fiction' Robert A. Heinlein!"

"Just outside our galaxy the atrocities of slavery thrive, and young Thorby is just another orphaned boy sold at auction. But when he crosses paths with a mysterious crippled beggar his destiny is forever changed. And now as his knowledge and skills mature Thorby becomes increasingly aware of how his ever-changing fortunes could affect the destinies of us all. Citizen of the Galaxy is an interstellar action/adventure, coming of age tale by the 'Dean of Science Fiction', Robert A. Heinlein! "

"Just outside our galaxy, the atrocities of slavery thrive, until an orphan finds his destiny in this interstellar action/adventure coming-of-age tale!"