The Question and Answer section for Ender’s Game is a great resource to ask questions, find answers, and discuss the novel.
A year after the bugger war ended, Ender is still required to stay on Eros. He was awarded the rank of Admiral, so he had free reign to watch the videos of his fights with Stilson and Bonzo as well as their corpses, which were displayed at Colonel...
Ender is unhappy because he has finally made a friend.
In Chapter Seven, Ender becomes friends with Alai.