What does Ender love in Ender's game?

What is the central object of affection for Ender in the novel "Ender's Game"? Does he have a particular person, idea, or goal that he cherishes and strives for throughout the story? Are there any hints or clues in the text that reveal what Ender truly loves, and how does this love motivate and shape his actions and decisions as he navigates the challenges of his world? As a reader, how can we understand and appreciate the significance of Ender's love within the context of the novel and its themes?