Speaker for the Dead
Suddenly we are 3,000 years into the future.
Ender is an adult now, 35 years old. All we really know about the 22 years since Ender’s victory on Eros is that he was exiled soon after and he has been traveling the galaxy at relativistic speeds. A careful reader will find bits and pieces, clues to the past but it’s largely a mystery. In any event, Ender begins a new adventure soon after the book begins.
Having destroyed an entire alien species Ender is racked with guilt over the war. He carries with him atonement and he has been looking for the right planet for a long time.
This book expands the Ender-verse and is the real beginning of the much larger story.