Fictionwise eBooks: Roppongi by Tony Teora
On an alien world in a deep underground base a young scientist named Tommy Tanaka invents a new spaceship engine. The engine allows colonists to go back to Earth in days and not the hundreds of years it originally took to arrive on planet Phoenix. But he soon realizes something is wrong with life on base Roppongi. Cloned Watcher controllers have monitored the progress of planetary terra-forming for hundreds of years, getting the planet ready for all colonists. But a possible murder and a decrypted message from his grandfather convinces Tommy that he must fly back to Earth to solve a transpiring riddle.