Indigo Billy by John Markestad

From alien experiment, to teen sex toy, to mega-billionaire…Billy’s a deeply flawed hero on his way to owning everything when catastrophe strikes the entire human race. Indigo Billy, the blue-skinned orphan, abandoned by his wealthy grandparents, grows up with only his own wits to find a way out of the poverty cycle. He lives inside the walls of a luxury space-liner, selling himself to the wealthy as he learns what he needs to break free and take on the galaxy. While working for the interplanetary EDARPA group, Billy invents weapons that turn the tide of the war with the geshaan…which ultimately leads to havoc across all of Earthspace. On his own once again, Billy sets himself a new goal—exact revenge upon the geshaan!